diff --git a/src/analytics/metrics/types.ts b/src/analytics/metrics/types.ts
index 78a4574f0f..1639c2a43d 100644
--- a/src/analytics/metrics/types.ts
+++ b/src/analytics/metrics/types.ts
@@ -715,6 +715,10 @@ export type Events = {
     count: number
   }
   'starterPack:delete': {}
+  'starterPack:optOut': {
+    starterPack: string
+    action: 'optOut' | 'undo'
+  }
   'starterPack:create': {
     setName: boolean
     setDescription: boolean
diff --git a/src/screens/StarterPack/StarterPackScreen.tsx b/src/screens/StarterPack/StarterPackScreen.tsx
index 7d9a11d358..40bc6f31a3 100644
--- a/src/screens/StarterPack/StarterPackScreen.tsx
+++ b/src/screens/StarterPack/StarterPackScreen.tsx
@@ -552,6 +552,12 @@ function OverflowMenu({
   const {mutate: setReferenceListOptOut, isPending: isOptOutPending} =
     useReferenceListOptOutMutation({
       starterPack,
+      onSuccess: action => {
+        ax.metric('starterPack:optOut', {
+          starterPack: starterPack.uri,
+          action,
+        })
+      },
       onError: error => {
         logger.error('Failed to update starter pack opt-out', {
           safeMessage: error,
diff --git a/src/state/queries/__tests__/starter-packs.test.tsx b/src/state/queries/__tests__/starter-packs.test.tsx
index 5f958f7ed2..61a787658f 100644
--- a/src/state/queries/__tests__/starter-packs.test.tsx
+++ b/src/state/queries/__tests__/starter-packs.test.tsx
@@ -34,7 +34,7 @@ const createdOptOut =
 const indexedOptOut =
   'at://did:plc:viewer/app.bsky.graph.referencelistoptout/indexed'
 
-function setup() {
+function setup({onSuccess = jest.fn()} = {}) {
   const queryClient = new QueryClient({
     defaultOptions: {
       queries: {gcTime: Infinity, retry: false},
@@ -57,11 +57,11 @@ function setup() {
     <QueryClientProvider client={queryClient}>{children}</QueryClientProvider>
   )
   const hook = renderHook(
-    () => useReferenceListOptOutMutation({starterPack, onError}),
+    () => useReferenceListOptOutMutation({starterPack, onError, onSuccess}),
     {wrapper},
   )
 
-  return {appviewClient, hook, onError, pdsClient, queryClient}
+  return {appviewClient, hook, onError, onSuccess, pdsClient, queryClient}
 }
 
 beforeEach(() => {
@@ -76,7 +76,7 @@ beforeAll(() => {
 
 describe('useReferenceListOptOutMutation', () => {
   it('keeps the successful PDS write optimistic when AppView has not caught up', async () => {
-    const {hook, pdsClient, queryClient} = setup()
+    const {hook, onSuccess, pdsClient, queryClient} = setup()
     pdsClient.create.mockResolvedValue({uri: createdOptOut})
     jest.mocked(until).mockResolvedValue(false)
 
@@ -92,6 +92,7 @@ describe('useReferenceListOptOutMutation', () => {
       queryClient.getQueryData<app.bsky.graph.defs.StarterPackView>(queryKey)
         ?.list?.viewer?.referenceListOptOut,
     ).toBe(createdOptOut)
+    expect(onSuccess).toHaveBeenCalledWith('optOut')
   })
 
   it('uses the indexed viewer-state URI when AppView reports a duplicate', async () => {
@@ -121,7 +122,7 @@ describe('useReferenceListOptOutMutation', () => {
   })
 
   it('deletes the viewer-state record URI when undoing', async () => {
-    const {hook, pdsClient, queryClient} = setup()
+    const {hook, onSuccess, pdsClient, queryClient} = setup()
     queryClient.setQueryData(queryKey, {
       ...starterPack,
       list: {
@@ -148,10 +149,11 @@ describe('useReferenceListOptOutMutation', () => {
       queryClient.getQueryData<app.bsky.graph.defs.StarterPackView>(queryKey)
         ?.list?.viewer?.referenceListOptOut,
     ).toBeUndefined()
+    expect(onSuccess).toHaveBeenCalledWith('undo')
   })
 
   it('restores viewer state and surfaces PDS write failures', async () => {
-    const {hook, onError, pdsClient, queryClient} = setup()
+    const {hook, onError, onSuccess, pdsClient, queryClient} = setup()
     const error = new Error('write failed')
     pdsClient.create.mockRejectedValue(error)
 
@@ -162,6 +164,7 @@ describe('useReferenceListOptOutMutation', () => {
     })
 
     await waitFor(() => expect(onError).toHaveBeenCalledWith(error))
+    expect(onSuccess).not.toHaveBeenCalled()
     expect(
       queryClient.getQueryData<app.bsky.graph.defs.StarterPackView>(queryKey)
         ?.list?.viewer?.referenceListOptOut,
diff --git a/src/state/queries/starter-packs.ts b/src/state/queries/starter-packs.ts
index 674fe7336d..bbc5d8b4e7 100644
--- a/src/state/queries/starter-packs.ts
+++ b/src/state/queries/starter-packs.ts
@@ -74,9 +74,11 @@ export function useStarterPackQuery({
 export function useReferenceListOptOutMutation({
   starterPack,
   onError,
+  onSuccess,
 }: {
   starterPack: app.bsky.graph.defs.StarterPackView
   onError: (error: Error) => void
+  onSuccess?: (action: 'optOut' | 'undo') => void
 }) {
   const queryClient = useQueryClient()
   const appviewClient = useAppviewClient()
@@ -171,7 +173,7 @@ export function useReferenceListOptOutMutation({
       )
       return {previous}
     },
-    onSuccess: ({referenceListOptOut}) => {
+    onSuccess: ({referenceListOptOut}, variables) => {
       queryClient.setQueryData<app.bsky.graph.defs.StarterPackView>(
         queryKey,
         current =>
@@ -192,6 +194,7 @@ export function useReferenceListOptOutMutation({
         queryClient,
         uri: starterPack.list!.uri,
       })
+      onSuccess?.(variables.referenceListOptOut ? 'undo' : 'optOut')
     },
     onError: (error, _, context) => {
       if (context?.previous) {