diff --git a/src/App.tsx b/src/App.tsx
index 8383a30..b61c103 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -35,6 +35,10 @@ import SystemMembersPage from "@/pages/admin/system-members";
 import IssuesPage from "@/pages/admin/issues";
 import FaqSupportPage from "@/pages/admin/support/faq";
 import NotificationBroadcastPage from "@/pages/admin/notifications/broadcast";
+import EmailTemplatesPage from "@/pages/admin/email-templates";
+import EmailTemplatePreviewPage from "@/pages/admin/email-templates/[key]";
+import SubscriptionsAdminPage from "@/pages/admin/subscriptions";
+import PlanManagementPage from "@/pages/admin/subscriptions/plans/[id]";
 
 function App() {
   return (
@@ -110,6 +114,17 @@ function App() {
           element={<ProformaRequestsPage />}
         />
         <Route path="admin/health" element={<HealthPage />} />
+        <Route path="admin/email-templates" element={<EmailTemplatesPage />} />
+        <Route
+          path="admin/email-templates/:key"
+          element={<EmailTemplatePreviewPage />}
+        />
+        <Route path="admin/subscriptions" element={<SubscriptionsAdminPage />} />
+        <Route
+          path="admin/subscriptions/plans/:id"
+          element={<PlanManagementPage />}
+        />
+
         <Route path="notifications" element={<NotificationsPage />} />
       </Route>
       <Route path="*" element={<Navigate to="/admin/dashboard" replace />} />
diff --git a/src/config/admin-search-routes.ts b/src/config/admin-search-routes.ts
index 6296288..f3d93d7 100644
--- a/src/config/admin-search-routes.ts
+++ b/src/config/admin-search-routes.ts
@@ -26,6 +26,8 @@ import {
   LifeBuoy,
   HelpCircle,
   Send,
+  Mail,
+  Layers,
 } from "lucide-react"
 
 export interface AdminSearchRoute {
@@ -103,9 +105,27 @@ export const ADMIN_SEARCH_ROUTES: AdminSearchRoute[] = [
     title: "Subscription transactions",
     description:
       "Successful and failed subscription charges for the platform.",
-    group: "Commerce",
+    group: "Subscriptions",
     icon: ArrowRightLeft,
   },
+  {
+    id: "subscription-plans",
+    path: "/admin/subscriptions",
+    title: "Subscription plans",
+    description:
+      "Manage plan pricing, feature flags, limits, and activation.",
+    group: "Subscriptions",
+    icon: Layers,
+  },
+  {
+    id: "email-templates",
+    path: "/admin/email-templates",
+    title: "Email templates",
+    description:
+      "Preview transactional email templates with sample data.",
+    group: "Communications",
+    icon: Mail,
+  },
   {
     id: "users",
     path: "/admin/users",
@@ -299,6 +319,7 @@ export const ADMIN_SEARCH_ROUTES: AdminSearchRoute[] = [
 const GROUP_ORDER = [
   "Overview",
   "Commerce",
+  "Subscriptions",
   "People & activity",
   "Support",
   "Operations",
diff --git a/src/layouts/app-shell.tsx b/src/layouts/app-shell.tsx
index 8351bb2..4dbe40c 100644
--- a/src/layouts/app-shell.tsx
+++ b/src/layouts/app-shell.tsx
@@ -24,6 +24,8 @@ import {
   ChevronDown,
   ChevronRight,
   Folder,
+  Mail,
+  Layers,
 } from "lucide-react";
 import { Button } from "@/components/ui/button";
 import { AdminQuickSearch } from "@/components/admin-quick-search";
@@ -56,6 +58,31 @@ type NavItem = {
   visible?: (role: string | undefined) => boolean;
 };
 
+function navItemIsActive(
+  item: NavItem,
+  isActive: (path?: string) => boolean,
+): boolean {
+  if (item.path && isActive(item.path)) return true;
+  return item.children?.some((child) => navItemIsActive(child, isActive)) ?? false;
+}
+
+function filterNavItems(
+  items: NavItem[],
+  role: string | undefined,
+): NavItem[] {
+  return items
+    .filter((item) => (item.visible ? item.visible(role) : true))
+    .map((item) =>
+      item.children
+        ? {
+            ...item,
+            children: filterNavItems(item.children, role),
+          }
+        : item,
+    )
+    .filter((item) => !item.children || item.children.length > 0);
+}
+
 const adminNavigationItems: NavItem[] = [
   { icon: LayoutDashboard, label: "Dashboard", path: "/admin/dashboard" },
   {
@@ -91,8 +118,19 @@ const adminNavigationItems: NavItem[] = [
   },
   {
     icon: ArrowRightLeft,
-    label: "Subscription transactions",
-    path: "/admin/transactions/subscriptions",
+    label: "Subscriptions",
+    children: [
+      {
+        label: "Transactions",
+        path: "/admin/transactions/subscriptions",
+        icon: ArrowRightLeft,
+      },
+      {
+        label: "Plans",
+        path: "/admin/subscriptions",
+        icon: Layers,
+      },
+    ],
   },
   {
     icon: Users,
@@ -153,9 +191,20 @@ const adminNavigationItems: NavItem[] = [
   },
   {
     icon: Send,
-    label: "Send notification",
-    path: "/admin/notifications/broadcast",
-    visible: (role) => getPermissions(role).canSendNotifications,
+    label: "Communications",
+    children: [
+      {
+        label: "Send notification",
+        path: "/admin/notifications/broadcast",
+        icon: Send,
+        visible: (role) => getPermissions(role).canSendNotifications,
+      },
+      {
+        label: "Email templates",
+        path: "/admin/email-templates",
+        icon: Mail,
+      },
+    ],
   },
 ];
 
@@ -163,15 +212,18 @@ const SidebarNavItem = ({
   item,
   depth = 0,
   isActive,
+  role,
 }: {
   item: NavItem;
   depth?: number;
   isActive: (path?: string) => boolean;
+  role: string | undefined;
 }) => {
-  const hasChildren = item.children && item.children.length > 0;
-  const isCurrentlyActive =
-    isActive(item.path) ||
-    (hasChildren && item.children?.some((child) => isActive(child.path)));
+  const visibleChildren = item.children
+    ? filterNavItems(item.children, role)
+    : undefined;
+  const hasChildren = visibleChildren && visibleChildren.length > 0;
+  const isCurrentlyActive = navItemIsActive(item, isActive);
 
   const [isOpen, setIsOpen] = useState(isCurrentlyActive);
 
@@ -209,12 +261,13 @@ const SidebarNavItem = ({
         </button>
         {isOpen && (
           <div className="space-y-1 ml-4 border-l border-slate-200">
-            {item.children?.map((child) => (
+            {visibleChildren?.map((child) => (
               <SidebarNavItem
                 key={child.label}
                 item={child}
                 depth={depth + 1}
                 isActive={isActive}
+                role={role}
               />
             ))}
           </div>
@@ -309,13 +362,12 @@ export function AppShell() {
 
         {/* Navigation */}
         <nav className="flex-1 px-4 py-2 space-y-1 overflow-y-auto">
-          {adminNavigationItems
-            .filter((item) => (item.visible ? item.visible(user?.role) : true))
-            .map((item) => (
+          {filterNavItems(adminNavigationItems, user?.role).map((item) => (
               <SidebarNavItem
                 key={item.label}
                 item={item}
                 isActive={isActive}
+                role={user?.role}
               />
             ))}
         </nav>
diff --git a/src/pages/admin/email-templates/[key].tsx b/src/pages/admin/email-templates/[key].tsx
new file mode 100644
index 0000000..f340228
--- /dev/null
+++ b/src/pages/admin/email-templates/[key].tsx
@@ -0,0 +1,94 @@
+import { useParams, useNavigate } from "react-router-dom"
+import { useQuery } from "@tanstack/react-query"
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
+import { Button } from "@/components/ui/button"
+import { Badge } from "@/components/ui/badge"
+import { ArrowLeft, ExternalLink, Loader2 } from "lucide-react"
+import { emailService } from "@/services"
+
+export default function EmailTemplatePreviewPage() {
+  const { key } = useParams()
+  const navigate = useNavigate()
+
+  const { data: templatesData } = useQuery({
+    queryKey: ['admin', 'email-templates'],
+    queryFn: () => emailService.listPreviewTemplates(),
+  })
+
+  const { data: preview, isLoading, error } = useQuery({
+    queryKey: ['admin', 'email-templates', key, 'preview'],
+    queryFn: () => emailService.getPreviewJson(key!),
+    enabled: !!key,
+  })
+
+  const templateMeta = templatesData?.templates.find((t) => t.key === key)
+
+  if (isLoading) {
+    return (
+      <div className="flex items-center justify-center py-16 text-muted-foreground">
+        <Loader2 className="w-5 h-5 mr-2 animate-spin" />
+        Rendering preview...
+      </div>
+    )
+  }
+
+  if (error || !preview) {
+    return (
+      <div className="space-y-4">
+        <Button variant="ghost" onClick={() => navigate('/admin/email-templates')}>
+          <ArrowLeft className="w-4 h-4 mr-2" />
+          Back to Templates
+        </Button>
+        <div className="text-center py-16 text-destructive">
+          Failed to load email preview.
+        </div>
+      </div>
+    )
+  }
+
+  return (
+    <div className="space-y-6">
+      <div className="flex items-center justify-between gap-4">
+        <div className="flex items-center gap-4">
+          <Button variant="ghost" size="icon" onClick={() => navigate('/admin/email-templates')}>
+            <ArrowLeft className="w-4 h-4" />
+          </Button>
+          <div>
+            <h2 className="text-3xl font-bold">{templateMeta?.name ?? preview.templateKey}</h2>
+            <p className="text-muted-foreground mt-1">{templateMeta?.description}</p>
+          </div>
+        </div>
+        <Button variant="outline" asChild>
+          <a
+            href={emailService.getPreviewHtmlUrl(key!)}
+            target="_blank"
+            rel="noopener noreferrer"
+          >
+            <ExternalLink className="w-4 h-4 mr-2" />
+            Open in New Tab
+          </a>
+        </Button>
+      </div>
+
+      <Card>
+        <CardHeader>
+          <div className="flex items-center gap-2 flex-wrap">
+            <CardTitle className="text-base">Subject</CardTitle>
+            <Badge variant="secondary">{preview.subject}</Badge>
+            <Badge variant="outline" className="font-mono">{preview.templateKey}</Badge>
+          </div>
+        </CardHeader>
+        <CardContent>
+          <div className="border rounded-lg overflow-hidden bg-white">
+            <iframe
+              title={`Email preview: ${preview.templateKey}`}
+              srcDoc={preview.html}
+              className="w-full min-h-[700px] border-0"
+              sandbox="allow-same-origin"
+            />
+          </div>
+        </CardContent>
+      </Card>
+    </div>
+  )
+}
diff --git a/src/pages/admin/email-templates/index.tsx b/src/pages/admin/email-templates/index.tsx
new file mode 100644
index 0000000..b10b599
--- /dev/null
+++ b/src/pages/admin/email-templates/index.tsx
@@ -0,0 +1,82 @@
+import { useNavigate } from "react-router-dom"
+import { useQuery } from "@tanstack/react-query"
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card"
+import { Badge } from "@/components/ui/badge"
+import { Button } from "@/components/ui/button"
+import { Mail, Eye, Loader2 } from "lucide-react"
+import { emailService } from "@/services"
+
+export default function EmailTemplatesPage() {
+  const navigate = useNavigate()
+
+  const { data, isLoading, error } = useQuery({
+    queryKey: ['admin', 'email-templates'],
+    queryFn: () => emailService.listPreviewTemplates(),
+  })
+
+  if (isLoading) {
+    return (
+      <div className="flex items-center justify-center py-16 text-muted-foreground">
+        <Loader2 className="w-5 h-5 mr-2 animate-spin" />
+        Loading email templates...
+      </div>
+    )
+  }
+
+  if (error) {
+    return (
+      <div className="text-center py-16 text-destructive">
+        Failed to load email templates.
+      </div>
+    )
+  }
+
+  const templates = data?.templates ?? []
+
+  return (
+    <div className="space-y-6">
+      <div>
+        <h2 className="text-3xl font-bold">Email Templates</h2>
+        <p className="text-muted-foreground mt-1">
+          Preview React Email templates with sample data and company branding.
+        </p>
+      </div>
+
+      <div className="grid grid-cols-1 md:grid-cols-2 xl:grid-cols-3 gap-4">
+        {templates.map((template) => (
+          <Card
+            key={template.key}
+            className="cursor-pointer hover:border-primary/50 transition-colors"
+            onClick={() => navigate(`/admin/email-templates/${template.key}`)}
+          >
+            <CardHeader className="pb-3">
+              <div className="flex items-start justify-between gap-2">
+                <div className="flex items-center gap-2">
+                  <div className="p-2 rounded-md bg-primary/10">
+                    <Mail className="w-4 h-4 text-primary" />
+                  </div>
+                  <div>
+                    <CardTitle className="text-base">{template.name}</CardTitle>
+                    <Badge variant="secondary" className="mt-1 font-mono text-xs">
+                      {template.key}
+                    </Badge>
+                  </div>
+                </div>
+              </div>
+              <CardDescription className="line-clamp-2">{template.description}</CardDescription>
+            </CardHeader>
+            <CardContent>
+              <p className="text-xs text-muted-foreground mb-3">
+                Subject: {template.defaultSubject}
+              </p>
+              <Button variant="outline" size="sm" className="w-full">
+                <Eye className="w-4 h-4 mr-2" />
+                Preview Template
+              </Button>
+            </CardContent>
+          </Card>
+        ))}
+      </div>
+    </div>
+  )
+}
diff --git a/src/pages/admin/subscriptions/index.tsx b/src/pages/admin/subscriptions/index.tsx
new file mode 100644
index 0000000..070d11c
--- /dev/null
+++ b/src/pages/admin/subscriptions/index.tsx
@@ -0,0 +1,105 @@
+import { useNavigate } from "react-router-dom";
+import { useQuery } from "@tanstack/react-query";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import { Button } from "@/components/ui/button";
+import { Badge } from "@/components/ui/badge";
+import {
+  Table,
+  TableBody,
+  TableCell,
+  TableHead,
+  TableHeader,
+  TableRow,
+} from "@/components/ui/table";
+import { Edit, Loader2 } from "lucide-react";
+import { subscriptionService } from "@/services";
+
+export default function SubscriptionsAdminPage() {
+  const navigate = useNavigate();
+
+  const { data: plans, isLoading: plansLoading } = useQuery({
+    queryKey: ["admin", "subscription-plans"],
+    queryFn: () => subscriptionService.getAdminPlans(),
+  });
+
+  return (
+    <div className="space-y-6">
+      <div>
+        <h2 className="text-3xl font-bold">Subscription Plans</h2>
+        <p className="text-muted-foreground mt-1">
+          Manage plan pricing, feature flags, limits, and activation status.
+          Payment history is under{" "}
+          <button
+            type="button"
+            className="text-primary underline-offset-4 hover:underline"
+            onClick={() => navigate("/admin/transactions/subscriptions")}
+          >
+            Subscriptions → Transactions
+          </button>
+          .
+        </p>
+      </div>
+
+      <Card>
+        <CardHeader>
+          <CardTitle>All Plans</CardTitle>
+        </CardHeader>
+        <CardContent>
+          {plansLoading ? (
+            <div className="flex items-center justify-center py-8 text-muted-foreground">
+              <Loader2 className="w-5 h-5 mr-2 animate-spin" />
+              Loading plans...
+            </div>
+          ) : (
+            <Table>
+              <TableHeader>
+                <TableRow>
+                  <TableHead>Plan</TableHead>
+                  <TableHead>Monthly (ETB)</TableHead>
+                  <TableHead>Yearly (ETB)</TableHead>
+                  <TableHead>Status</TableHead>
+                  <TableHead className="text-right">Actions</TableHead>
+                </TableRow>
+              </TableHeader>
+              <TableBody>
+                {plans?.map((plan) => (
+                  <TableRow key={plan.id}>
+                    <TableCell>
+                      <div>
+                        <p className="font-medium">{plan.displayName}</p>
+                        <p className="text-xs text-muted-foreground">{plan.name}</p>
+                      </div>
+                    </TableCell>
+                    <TableCell>
+                      {plan.isFree ? "Free" : plan.monthlyPrice.toLocaleString()}
+                    </TableCell>
+                    <TableCell>
+                      {plan.isFree ? "Free" : plan.yearlyPrice.toLocaleString()}
+                    </TableCell>
+                    <TableCell>
+                      <Badge className={plan.isActive ? "bg-green-500" : "bg-gray-500"}>
+                        {plan.isActive ? "Active" : "Inactive"}
+                      </Badge>
+                    </TableCell>
+                    <TableCell className="text-right">
+                      <Button
+                        variant="outline"
+                        size="sm"
+                        onClick={() =>
+                          navigate(`/admin/subscriptions/plans/${plan.id}`)
+                        }
+                      >
+                        <Edit className="w-4 h-4 mr-2" />
+                        Manage
+                      </Button>
+                    </TableCell>
+                  </TableRow>
+                ))}
+              </TableBody>
+            </Table>
+          )}
+        </CardContent>
+      </Card>
+    </div>
+  );
+}
diff --git a/src/pages/admin/subscriptions/plans/[id].tsx b/src/pages/admin/subscriptions/plans/[id].tsx
new file mode 100644
index 0000000..17876c9
--- /dev/null
+++ b/src/pages/admin/subscriptions/plans/[id].tsx
@@ -0,0 +1,250 @@
+import { useEffect, useState } from "react"
+import { useParams, useNavigate } from "react-router-dom"
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query"
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
+import { Button } from "@/components/ui/button"
+import { Input } from "@/components/ui/input"
+import { Label } from "@/components/ui/label"
+import { Switch } from "@/components/ui/switch"
+import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs"
+import { ArrowLeft, Loader2 } from "lucide-react"
+import { subscriptionService, type PlanFeatures } from "@/services"
+import { toast } from "sonner"
+import type { ApiError } from "@/types/error.types"
+
+function formatFeatureLabel(key: string) {
+  return key.replace(/_/g, " ").replace(/\b\w/g, (c) => c.toUpperCase())
+}
+
+export default function PlanManagementPage() {
+  const { id } = useParams()
+  const navigate = useNavigate()
+  const queryClient = useQueryClient()
+
+  const [displayName, setDisplayName] = useState("")
+  const [description, setDescription] = useState("")
+  const [monthlyPrice, setMonthlyPrice] = useState("")
+  const [yearlyPrice, setYearlyPrice] = useState("")
+  const [isActive, setIsActive] = useState(true)
+  const [features, setFeatures] = useState<PlanFeatures>({ features: {}, limits: {} })
+
+  const { data: plan, isLoading } = useQuery({
+    queryKey: ['admin', 'subscription-plans', id],
+    queryFn: () => subscriptionService.getAdminPlan(id!),
+    enabled: !!id,
+  })
+
+  useEffect(() => {
+    if (plan) {
+      setDisplayName(plan.displayName)
+      setDescription(plan.description ?? "")
+      setMonthlyPrice(String(plan.monthlyPrice))
+      setYearlyPrice(String(plan.yearlyPrice))
+      setIsActive(plan.isActive)
+      setFeatures(plan.features)
+    }
+  }, [plan])
+
+  const updatePlanMutation = useMutation({
+    mutationFn: () =>
+      subscriptionService.updatePlan(id!, {
+        displayName,
+        description,
+        monthlyPrice: Number(monthlyPrice),
+        yearlyPrice: Number(yearlyPrice),
+        isActive,
+      }),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['admin', 'subscription-plans'] })
+      toast.success("Plan settings updated")
+    },
+    onError: (error) => {
+      const apiError = error as ApiError
+      toast.error(apiError.response?.data?.message || "Failed to update plan")
+    },
+  })
+
+  const updateFeaturesMutation = useMutation({
+    mutationFn: () => subscriptionService.updatePlanFeatures(id!, features),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['admin', 'subscription-plans'] })
+      toast.success("Plan features updated")
+    },
+    onError: (error) => {
+      const apiError = error as ApiError
+      toast.error(apiError.response?.data?.message || "Failed to update features")
+    },
+  })
+
+  const toggleFeature = (key: string) => {
+    setFeatures((prev) => ({
+      ...prev,
+      features: { ...prev.features, [key]: !prev.features[key] },
+    }))
+  }
+
+  const updateLimit = (key: string, value: string) => {
+    const parsed = value.trim() === "" ? null : Number(value)
+    setFeatures((prev) => ({
+      ...prev,
+      limits: { ...prev.limits, [key]: parsed },
+    }))
+  }
+
+  if (isLoading) {
+    return (
+      <div className="flex items-center justify-center py-16 text-muted-foreground">
+        <Loader2 className="w-5 h-5 mr-2 animate-spin" />
+        Loading plan...
+      </div>
+    )
+  }
+
+  if (!plan) {
+    return <div className="text-center py-16">Plan not found.</div>
+  }
+
+  return (
+    <div className="space-y-6">
+      <div className="flex items-center gap-4">
+        <Button variant="ghost" size="icon" onClick={() => navigate('/admin/subscriptions')}>
+          <ArrowLeft className="w-4 h-4" />
+        </Button>
+        <div>
+          <h2 className="text-3xl font-bold">{plan.displayName}</h2>
+          <p className="text-muted-foreground">{plan.name} plan</p>
+        </div>
+      </div>
+
+      <Tabs defaultValue="pricing">
+        <TabsList>
+          <TabsTrigger value="pricing">Pricing & Status</TabsTrigger>
+          <TabsTrigger value="features">Features & Limits</TabsTrigger>
+        </TabsList>
+
+        <TabsContent value="pricing">
+          <Card>
+            <CardHeader>
+              <CardTitle>Pricing Settings</CardTitle>
+            </CardHeader>
+            <CardContent className="space-y-4 max-w-lg">
+              <div className="space-y-2">
+                <Label htmlFor="displayName">Display Name</Label>
+                <Input
+                  id="displayName"
+                  value={displayName}
+                  onChange={(e) => setDisplayName(e.target.value)}
+                />
+              </div>
+              <div className="space-y-2">
+                <Label htmlFor="description">Description</Label>
+                <Input
+                  id="description"
+                  value={description}
+                  onChange={(e) => setDescription(e.target.value)}
+                />
+              </div>
+              {!plan.isFree && (
+                <>
+                  <div className="space-y-2">
+                    <Label htmlFor="monthlyPrice">Monthly Price (ETB)</Label>
+                    <Input
+                      id="monthlyPrice"
+                      type="number"
+                      min={0}
+                      value={monthlyPrice}
+                      onChange={(e) => setMonthlyPrice(e.target.value)}
+                    />
+                  </div>
+                  <div className="space-y-2">
+                    <Label htmlFor="yearlyPrice">Yearly Price (ETB)</Label>
+                    <Input
+                      id="yearlyPrice"
+                      type="number"
+                      min={0}
+                      value={yearlyPrice}
+                      onChange={(e) => setYearlyPrice(e.target.value)}
+                    />
+                  </div>
+                </>
+              )}
+              <div className="flex items-center justify-between rounded-lg border p-4">
+                <div>
+                  <Label htmlFor="isActive">Plan Active</Label>
+                  <p className="text-xs text-muted-foreground">
+                    Inactive plans are hidden from new subscriptions.
+                  </p>
+                </div>
+                <Switch id="isActive" checked={isActive} onCheckedChange={setIsActive} />
+              </div>
+              <Button
+                onClick={() => updatePlanMutation.mutate()}
+                disabled={updatePlanMutation.isPending}
+              >
+                {updatePlanMutation.isPending && (
+                  <Loader2 className="w-4 h-4 mr-2 animate-spin" />
+                )}
+                Save Pricing
+              </Button>
+            </CardContent>
+          </Card>
+        </TabsContent>
+
+        <TabsContent value="features">
+          <div className="grid grid-cols-1 lg:grid-cols-2 gap-4">
+            <Card>
+              <CardHeader>
+                <CardTitle>Feature Flags</CardTitle>
+              </CardHeader>
+              <CardContent className="space-y-3">
+                {Object.entries(features.features).map(([key, enabled]) => (
+                  <div key={key} className="flex items-center justify-between rounded-lg border p-3">
+                    <Label htmlFor={`feature-${key}`}>{formatFeatureLabel(key)}</Label>
+                    <Switch
+                      id={`feature-${key}`}
+                      checked={enabled}
+                      onCheckedChange={() => toggleFeature(key)}
+                    />
+                  </div>
+                ))}
+              </CardContent>
+            </Card>
+
+            <Card>
+              <CardHeader>
+                <CardTitle>Usage Limits</CardTitle>
+              </CardHeader>
+              <CardContent className="space-y-3">
+                {Object.entries(features.limits).map(([key, limit]) => (
+                  <div key={key} className="space-y-1">
+                    <Label htmlFor={`limit-${key}`}>{formatFeatureLabel(key)}</Label>
+                    <Input
+                      id={`limit-${key}`}
+                      type="number"
+                      min={0}
+                      placeholder="Unlimited (empty)"
+                      value={limit === null ? "" : String(limit)}
+                      onChange={(e) => updateLimit(key, e.target.value)}
+                    />
+                  </div>
+                ))}
+              </CardContent>
+            </Card>
+          </div>
+
+          <div className="mt-4">
+            <Button
+              onClick={() => updateFeaturesMutation.mutate()}
+              disabled={updateFeaturesMutation.isPending}
+            >
+              {updateFeaturesMutation.isPending && (
+                <Loader2 className="w-4 h-4 mr-2 animate-spin" />
+              )}
+              Save Features
+            </Button>
+          </div>
+        </TabsContent>
+      </Tabs>
+    </div>
+  )
+}
diff --git a/src/pages/admin/transactions/subscription-transactions.tsx b/src/pages/admin/transactions/subscription-transactions.tsx
index 4eff612..432b10f 100644
--- a/src/pages/admin/transactions/subscription-transactions.tsx
+++ b/src/pages/admin/transactions/subscription-transactions.tsx
@@ -21,11 +21,11 @@ import type { SubscriptionPaymentStatus } from "@/services/subscription-transact
 import { cn } from "@/lib/utils";
 
 export default function SubscriptionTransactionsPage() {
-  const [tab, setTab] = useState<"succeeded" | "failed">("succeeded");
+  const [tab, setTab] = useState<"completed" | "failed">("completed");
   const [page, setPage] = useState(1);
   const [search, setSearch] = useState("");
   const status: SubscriptionPaymentStatus =
-    tab === "succeeded" ? "SUCCEEDED" : "FAILED";
+    tab === "completed" ? "COMPLETED" : "FAILED";
 
   const { data, isLoading, error } = useQuery({
     queryKey: ["admin", "subscription-transactions", status, page, search],
@@ -76,18 +76,18 @@ export default function SubscriptionTransactionsPage() {
               <Tabs
                 value={tab}
                 onValueChange={(v) => {
-                  setTab(v as "succeeded" | "failed");
+                  setTab(v as "completed" | "failed");
                   setPage(1);
                 }}
                 className="w-full sm:w-auto"
               >
                 <TabsList className="bg-slate-100/80 p-1 rounded-xl h-11 border border-slate-200/50">
                   <TabsTrigger
-                    value="succeeded"
+                    value="completed"
                     className="rounded-lg px-6 gap-2 data-[state=active]:bg-white data-[state=active]:text-emerald-600 data-[state=active]:shadow-sm transition-all font-bold text-xs uppercase"
                   >
                     <CheckCircle2 className="h-3.5 w-3.5" />
-                    Succeeded
+                    Completed
                   </TabsTrigger>
                   <TabsTrigger
                     value="failed"
@@ -121,7 +121,7 @@ export default function SubscriptionTransactionsPage() {
                 <div className="text-sm font-medium">
                   Failed to synchronize with banking ledger. Verify{" "}
                   <code className="bg-rose-100/50 px-1.5 py-0.5 rounded leading-none">
-                    GET /admin/subscription-transactions
+                    GET /subscription/admin/transactions
                   </code>{" "}
                   is reachable.
                 </div>
@@ -238,7 +238,7 @@ export default function SubscriptionTransactionsPage() {
                           <Badge
                             className={cn(
                               "rounded-lg px-3 py-1 text-[10px] font-black uppercase tracking-widest border-none shadow-sm",
-                              row.status === "SUCCEEDED"
+                              row.status === "COMPLETED"
                                 ? "bg-emerald-500 text-white shadow-emerald-200/50"
                                 : row.status === "FAILED"
                                   ? "bg-rose-500 text-white shadow-rose-200/50"
diff --git a/src/pages/admin/users/[id]/index.tsx b/src/pages/admin/users/[id]/index.tsx
index cc86a6a..76bee60 100644
--- a/src/pages/admin/users/[id]/index.tsx
+++ b/src/pages/admin/users/[id]/index.tsx
@@ -1,5 +1,5 @@
 import { useParams, useNavigate } from "react-router-dom";
-import { useQuery } from "@tanstack/react-query";
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
 import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
@@ -21,19 +21,29 @@ import {
   SelectTrigger,
   SelectValue,
 } from "@/components/ui/select";
-import { ArrowLeft, Edit, Key, Loader2 } from "lucide-react";
-import { userService } from "@/services";
+import { ArrowLeft, Edit, Key, Loader2, CreditCard } from "lucide-react";
+import {
+  userService,
+  subscriptionService,
+  type BillingInterval,
+} from "@/services";
 import { useAdminRole } from "@/hooks/use-admin-role";
 import { format } from "date-fns";
 import { useState } from "react";
 import { toast } from "sonner";
+import type { ApiError } from "@/types/error.types";
 
 export default function UserDetailsPage() {
   const { id } = useParams();
   const navigate = useNavigate();
+  const queryClient = useQueryClient();
   const { canEditUsers } = useAdminRole();
   const [isEditDialogOpen, setIsEditDialogOpen] = useState(false);
+  const [isAssignDialogOpen, setIsAssignDialogOpen] = useState(false);
   const [isSubmitting, setIsSubmitting] = useState(false);
+  const [assignPlanId, setAssignPlanId] = useState("");
+  const [assignBillingInterval, setAssignBillingInterval] =
+    useState<BillingInterval>("MONTHLY");
   const [editForm, setEditForm] = useState({
     firstName: "",
     lastName: "",
@@ -52,6 +62,36 @@ export default function UserDetailsPage() {
     enabled: !!id,
   });
 
+  const { data: subscription, isLoading: subscriptionLoading } = useQuery({
+    queryKey: ["admin", "users", id, "subscription"],
+    queryFn: () => subscriptionService.getUserSubscription(id!),
+    enabled: !!id,
+  });
+
+  const { data: plans } = useQuery({
+    queryKey: ["admin", "subscription-plans"],
+    queryFn: () => subscriptionService.getAdminPlans(),
+  });
+
+  const assignPlanMutation = useMutation({
+    mutationFn: () =>
+      subscriptionService.assignPlan(id!, {
+        planId: assignPlanId,
+        billingInterval: assignBillingInterval,
+      }),
+    onSuccess: () => {
+      queryClient.invalidateQueries({
+        queryKey: ["admin", "users", id, "subscription"],
+      });
+      toast.success("Plan assigned successfully");
+      setIsAssignDialogOpen(false);
+    },
+    onError: (error) => {
+      const apiError = error as ApiError;
+      toast.error(apiError.response?.data?.message || "Failed to assign plan");
+    },
+  });
+
   const handleEditClick = () => {
     if (user) {
       setEditForm({
@@ -104,6 +144,7 @@ export default function UserDetailsPage() {
       <Tabs defaultValue="info" className="space-y-4">
         <TabsList>
           <TabsTrigger value="info">Information</TabsTrigger>
+          <TabsTrigger value="subscription">Subscription</TabsTrigger>
           <TabsTrigger value="statistics">Statistics</TabsTrigger>
           <TabsTrigger
             value="activity"
@@ -184,6 +225,78 @@ export default function UserDetailsPage() {
           </Card>
         </TabsContent>
 
+        <TabsContent value="subscription" className="space-y-4">
+          <Card>
+            <CardHeader>
+              <div className="flex items-center justify-between">
+                <CardTitle>Subscription Details</CardTitle>
+                {canEditUsers && (
+                  <Button
+                    variant="outline"
+                    size="sm"
+                    onClick={() => {
+                      setAssignPlanId(subscription?.plan.id ?? "");
+                      setIsAssignDialogOpen(true);
+                    }}
+                  >
+                    <CreditCard className="w-4 h-4 mr-2" />
+                    Assign Plan
+                  </Button>
+                )}
+              </div>
+            </CardHeader>
+            <CardContent>
+              {subscriptionLoading ? (
+                <div className="flex items-center text-muted-foreground">
+                  <Loader2 className="w-4 h-4 mr-2 animate-spin" />
+                  Loading subscription...
+                </div>
+              ) : subscription ? (
+                <div className="space-y-6">
+                  <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
+                    <div>
+                      <p className="text-sm text-muted-foreground">Plan</p>
+                      <p className="font-medium">{subscription.plan.displayName}</p>
+                    </div>
+                    <div>
+                      <p className="text-sm text-muted-foreground">Status</p>
+                      <Badge>{subscription.subscription.status}</Badge>
+                    </div>
+                    <div>
+                      <p className="text-sm text-muted-foreground">Billing</p>
+                      <p className="font-medium">{subscription.subscription.billingInterval}</p>
+                    </div>
+                    <div>
+                      <p className="text-sm text-muted-foreground">Period End</p>
+                      <p className="font-medium">
+                        {format(new Date(subscription.subscription.currentPeriodEnd), 'PP')}
+                      </p>
+                    </div>
+                  </div>
+
+                  <div>
+                    <p className="text-sm font-medium mb-3">Usage This Period</p>
+                    <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-3">
+                      {Object.entries(subscription.usage).map(([key, { used, limit }]) => (
+                        <div key={key} className="rounded-lg border p-3">
+                          <p className="text-xs text-muted-foreground capitalize">
+                            {key.replace(/_/g, ' ')}
+                          </p>
+                          <p className="font-medium">
+                            {used} / {limit === null ? '∞' : limit}
+                          </p>
+                        </div>
+                      ))}
+                    </div>
+                  </div>
+                </div>
+              ) : (
+                <p className="text-muted-foreground">No subscription data available.</p>
+              )}
+            </CardContent>
+          </Card>
+        </TabsContent>
+
         <TabsContent value="statistics" className="space-y-4">
           <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4">
             <Card>
@@ -324,6 +437,63 @@ export default function UserDetailsPage() {
           </DialogFooter>
         </DialogContent>
       </Dialog>
+
+      <Dialog open={isAssignDialogOpen} onOpenChange={setIsAssignDialogOpen}>
+        <DialogContent>
+          <DialogHeader>
+            <DialogTitle>Assign Subscription Plan</DialogTitle>
+            <DialogDescription>
+              Manually assign a plan to this user. Changes take effect immediately.
+            </DialogDescription>
+          </DialogHeader>
+          <div className="space-y-4 py-4">
+            <div className="space-y-2">
+              <Label htmlFor="plan">Plan</Label>
+              <Select value={assignPlanId} onValueChange={setAssignPlanId}>
+                <SelectTrigger>
+                  <SelectValue placeholder="Select a plan" />
+                </SelectTrigger>
+                <SelectContent>
+                  {plans?.map((plan) => (
+                    <SelectItem key={plan.id} value={plan.id}>
+                      {plan.displayName}
+                    </SelectItem>
+                  ))}
+                </SelectContent>
+              </Select>
+            </div>
+            <div className="space-y-2">
+              <Label htmlFor="billingInterval">Billing Interval</Label>
+              <Select
+                value={assignBillingInterval}
+                onValueChange={(value) => setAssignBillingInterval(value as BillingInterval)}
+              >
+                <SelectTrigger>
+                  <SelectValue placeholder="Select interval" />
+                </SelectTrigger>
+                <SelectContent>
+                  <SelectItem value="MONTHLY">Monthly</SelectItem>
+                  <SelectItem value="YEARLY">Yearly</SelectItem>
+                </SelectContent>
+              </Select>
+            </div>
+          </div>
+          <DialogFooter>
+            <Button variant="outline" onClick={() => setIsAssignDialogOpen(false)}>
+              Cancel
+            </Button>
+            <Button
+              onClick={() => assignPlanMutation.mutate()}
+              disabled={!assignPlanId || assignPlanMutation.isPending}
+            >
+              {assignPlanMutation.isPending && (
+                <Loader2 className="w-4 h-4 mr-2 animate-spin" />
+              )}
+              Assign Plan
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
     </div>
   );
 }
diff --git a/src/services/email.service.ts b/src/services/email.service.ts
new file mode 100644
index 0000000..1137552
--- /dev/null
+++ b/src/services/email.service.ts
@@ -0,0 +1,26 @@
+import apiClient from './api/client'
+import type {
+  EmailPreviewResult,
+  EmailTemplateListResponse,
+} from '@/types/email.types'
+
+class EmailService {
+  async listPreviewTemplates(): Promise<EmailTemplateListResponse> {
+    const response = await apiClient.get<EmailTemplateListResponse>('/emails/preview/templates')
+    return response.data
+  }
+
+  async getPreviewJson(templateKey: string): Promise<EmailPreviewResult> {
+    const response = await apiClient.get<EmailPreviewResult>(
+      `/emails/preview/${templateKey}/json`,
+    )
+    return response.data
+  }
+
+  getPreviewHtmlUrl(templateKey: string): string {
+    const baseUrl = import.meta.env.VITE_BACKEND_API_URL || 'http://localhost:3001/api/v1'
+    return `${baseUrl}/emails/preview/${templateKey}`
+  }
+}
+
+export const emailService = new EmailService()
diff --git a/src/services/index.ts b/src/services/index.ts
index 1eb6c7e..baf3d62 100644
--- a/src/services/index.ts
+++ b/src/services/index.ts
@@ -15,6 +15,8 @@ export { subscriptionTransactionService } from "./subscription-transaction.servi
 export { systemMemberService } from "./system-member.service";
 export { issueService } from "./issue.service";
 export { faqService } from "./faq.service";
+export { subscriptionService } from "./subscription.service";
+export { emailService } from "./email.service";
 
 // Export types
 export type { LoginRequest, LoginResponse } from "./auth.service";
@@ -73,3 +75,18 @@ export type {
 export type { SystemMember, CreateSystemMemberPayload } from "./system-member.service";
 export type { SupportIssue, IssueStatus } from "./issue.service";
 export type { FaqEntry, FaqAudience } from "./faq.service";
+export type {
+  SubscriptionPlan,
+  PlanFeatures,
+  UpdatePlanData,
+  AssignPlanData,
+  UserSubscriptionSummary,
+  SubscriptionTransaction as AdminSubscriptionTransaction,
+  GetSubscriptionTransactionsParams,
+  BillingInterval,
+  ChapaTransactionStatus,
+} from "@/types/subscription.types";
+export type {
+  EmailTemplateMeta,
+  EmailPreviewResult,
+} from "@/types/email.types";
diff --git a/src/services/subscription-transaction.service.ts b/src/services/subscription-transaction.service.ts
index 5af3cc2..ef9a382 100644
--- a/src/services/subscription-transaction.service.ts
+++ b/src/services/subscription-transaction.service.ts
@@ -1,6 +1,6 @@
 import apiClient from "./api/client"
 
-export type SubscriptionPaymentStatus = "SUCCEEDED" | "FAILED" | "PENDING"
+export type SubscriptionPaymentStatus = "COMPLETED" | "FAILED" | "PENDING"
 
 export interface SubscriptionTransaction {
   id: string
@@ -36,7 +36,7 @@ class SubscriptionTransactionService {
     filters: SubscriptionTransactionFilters = {},
   ): Promise<PaginatedSubscriptionTx> {
     const response = await apiClient.get<PaginatedSubscriptionTx>(
-      "/admin/subscription-transactions",
+      "/subscription/admin/transactions",
       { params: filters },
     )
     return response.data
diff --git a/src/services/subscription.service.ts b/src/services/subscription.service.ts
new file mode 100644
index 0000000..85ffaf0
--- /dev/null
+++ b/src/services/subscription.service.ts
@@ -0,0 +1,67 @@
+import apiClient from './api/client'
+import type {
+  AssignPlanData,
+  GetSubscriptionTransactionsParams,
+  PlanFeatures,
+  SubscriptionPlan,
+  SubscriptionTransactionsResponse,
+  UpdatePlanData,
+  UserSubscriptionSummary,
+} from '@/types/subscription.types'
+
+class SubscriptionService {
+  async getAdminPlans(): Promise<SubscriptionPlan[]> {
+    const response = await apiClient.get<SubscriptionPlan[]>('/subscription/admin/plans')
+    return response.data
+  }
+
+  async getAdminPlan(id: string): Promise<SubscriptionPlan> {
+    const response = await apiClient.get<SubscriptionPlan>(`/subscription/admin/plans/${id}`)
+    return response.data
+  }
+
+  async updatePlan(id: string, data: UpdatePlanData): Promise<SubscriptionPlan> {
+    const response = await apiClient.put<SubscriptionPlan>(`/subscription/admin/plans/${id}`, data)
+    return response.data
+  }
+
+  async updatePlanFeatures(id: string, features: PlanFeatures): Promise<SubscriptionPlan> {
+    const response = await apiClient.put<SubscriptionPlan>(
+      `/subscription/admin/plans/${id}/features`,
+      features,
+    )
+    return response.data
+  }
+
+  async getUserSubscription(userId: string): Promise<UserSubscriptionSummary> {
+    const response = await apiClient.get<UserSubscriptionSummary>(
+      `/subscription/admin/users/${userId}`,
+    )
+    return response.data
+  }
+
+  async assignPlan(userId: string, data: AssignPlanData) {
+    const response = await apiClient.post(`/subscription/admin/users/${userId}/assign`, data)
+    return response.data
+  }
+
+  async getSubscriptionTransactions(
+    params?: GetSubscriptionTransactionsParams,
+  ): Promise<SubscriptionTransactionsResponse> {
+    const queryParams = params
+      ? {
+          ...params,
+          page: params.page ? Number(params.page) : undefined,
+          limit: params.limit ? Number(params.limit) : undefined,
+        }
+      : undefined
+
+    const response = await apiClient.get<SubscriptionTransactionsResponse>(
+      '/subscription/admin/transactions',
+      { params: queryParams },
+    )
+    return response.data
+  }
+}
+
+export const subscriptionService = new SubscriptionService()
diff --git a/src/types/email.types.ts b/src/types/email.types.ts
new file mode 100644
index 0000000..046589d
--- /dev/null
+++ b/src/types/email.types.ts
@@ -0,0 +1,18 @@
+export interface EmailTemplateMeta {
+  key: string
+  name: string
+  description: string
+  defaultSubject: string
+  previewUrl: string
+  previewJsonUrl: string
+}
+
+export interface EmailTemplateListResponse {
+  templates: EmailTemplateMeta[]
+}
+
+export interface EmailPreviewResult {
+  templateKey: string
+  subject: string
+  html: string
+}
diff --git a/src/types/subscription.types.ts b/src/types/subscription.types.ts
new file mode 100644
index 0000000..1be5038
--- /dev/null
+++ b/src/types/subscription.types.ts
@@ -0,0 +1,117 @@
+export type BillingInterval = 'MONTHLY' | 'YEARLY'
+
+export type SubscriptionStatus =
+  | 'ACTIVE'
+  | 'PAST_DUE'
+  | 'CANCELLED'
+  | 'EXPIRED'
+  | 'TRIALING'
+
+export type ChapaTransactionStatus =
+  | 'PENDING'
+  | 'SUCCESS'
+  | 'FAILED'
+  | 'CANCELLED'
+
+export interface PlanFeatures {
+  features: Record<string, boolean>
+  limits: Record<string, number | null>
+}
+
+export interface SubscriptionPlan {
+  id: string
+  name: string
+  displayName: string
+  description: string
+  isFree: boolean
+  isActive: boolean
+  sortOrder: number
+  monthlyPrice: number
+  yearlyPrice: number
+  features: PlanFeatures
+  createdAt?: string
+  updatedAt?: string
+}
+
+export interface UpdatePlanData {
+  displayName?: string
+  description?: string
+  monthlyPrice?: number
+  yearlyPrice?: number
+  isActive?: boolean
+}
+
+export interface AssignPlanData {
+  planId: string
+  billingInterval?: BillingInterval
+  externalRef?: string
+}
+
+export interface UserSubscriptionSummary {
+  plan: {
+    id: string
+    name: string
+    displayName: string
+    isFree: boolean
+  }
+  subscription: {
+    id: string
+    status: SubscriptionStatus
+    billingInterval: BillingInterval
+    currentPeriodStart: string
+    currentPeriodEnd: string
+    nextBillingAt: string | null
+    trialEndsAt: string | null
+  }
+  features: Record<string, boolean>
+  usage: Record<string, { used: number; limit: number | null }>
+}
+
+export interface SubscriptionTransactionUser {
+  id: string
+  email: string
+  firstName: string | null
+  lastName: string | null
+}
+
+export interface SubscriptionTransactionPlan {
+  id: string
+  name: string
+  displayName: string
+}
+
+export interface SubscriptionTransaction {
+  id: string
+  txRef: string
+  checkoutUrl: string | null
+  totalAmount: number
+  currency: string
+  status: ChapaTransactionStatus
+  purpose: string
+  billingInterval: BillingInterval | null
+  userId: string
+  planId: string | null
+  createdAt: string
+  user: SubscriptionTransactionUser
+  plan: SubscriptionTransactionPlan | null
+}
+
+export interface SubscriptionTransactionsResponse {
+  data: SubscriptionTransaction[]
+  meta: {
+    total: number
+    page: number
+    limit: number
+    totalPages: number
+    hasNextPage: boolean
+    hasPreviousPage: boolean
+  }
+}
+
+export interface GetSubscriptionTransactionsParams {
+  page?: number
+  limit?: number
+  userId?: string
+  planId?: string
+  status?: ChapaTransactionStatus
+}