diff --git a/WordPress/src/main/java/org/wordpress/android/ui/reader/ReaderPostDetailFragment.kt b/WordPress/src/main/java/org/wordpress/android/ui/reader/ReaderPostDetailFragment.kt
index bc4bdc52de56..6d4d04c9f8d4 100644
--- a/WordPress/src/main/java/org/wordpress/android/ui/reader/ReaderPostDetailFragment.kt
+++ b/WordPress/src/main/java/org/wordpress/android/ui/reader/ReaderPostDetailFragment.kt
@@ -57,6 +57,7 @@ import dagger.hilt.android.AndroidEntryPoint
 import org.greenrobot.eventbus.EventBus
 import org.greenrobot.eventbus.Subscribe
 import org.greenrobot.eventbus.ThreadMode
+import org.wordpress.android.BuildConfig
 import org.wordpress.android.R
 import org.wordpress.android.WordPress
 import org.wordpress.android.analytics.AnalyticsTracker
@@ -935,6 +936,15 @@ class ReaderPostDetailFragment : ViewPagerFragment(),
             is ReaderNavigationEvents.ShowPostDetail,
             is ReaderNavigationEvents.ShowVideoViewer,
             is ReaderNavigationEvents.ShowReaderSubs -> Unit // Do Nothing
+            is ReaderNavigationEvents.ShowSignIn -> navigateToLogin()
+        }
+    }
+
+    private fun navigateToLogin() {
+        if (BuildConfig.IS_JETPACK_APP) {
+            ActivityLauncher.showSignInForResultJetpackOnly(requireActivity())
+        } else {
+            ActivityLauncher.showSignInForResultWpComOnly(requireActivity())
         }
     }
 
diff --git a/WordPress/src/main/java/org/wordpress/android/ui/reader/discover/ReaderDiscoverFragment.kt b/WordPress/src/main/java/org/wordpress/android/ui/reader/discover/ReaderDiscoverFragment.kt
index 9ec358add447..5f507e896400 100644
--- a/WordPress/src/main/java/org/wordpress/android/ui/reader/discover/ReaderDiscoverFragment.kt
+++ b/WordPress/src/main/java/org/wordpress/android/ui/reader/discover/ReaderDiscoverFragment.kt
@@ -5,6 +5,7 @@ import android.content.Intent
 import android.os.Bundle
 import android.view.View
 import androidx.appcompat.app.AlertDialog
+import org.wordpress.android.BuildConfig
 import androidx.core.content.ContextCompat
 import androidx.lifecycle.ViewModelProvider
 import androidx.recyclerview.widget.LinearLayoutManager
@@ -39,6 +40,7 @@ import org.wordpress.android.ui.reader.discover.ReaderNavigationEvents.ShowReade
 import org.wordpress.android.ui.reader.discover.ReaderNavigationEvents.ShowReaderSubs
 import org.wordpress.android.ui.reader.discover.ReaderNavigationEvents.ShowReportPost
 import org.wordpress.android.ui.reader.discover.ReaderNavigationEvents.ShowReportUser
+import org.wordpress.android.ui.reader.discover.ReaderNavigationEvents.ShowSignIn
 import org.wordpress.android.ui.reader.discover.ReaderNavigationEvents.ShowSitePickerForResult
 import org.wordpress.android.ui.reader.discover.ReaderNavigationEvents.ShowVideoViewer
 import org.wordpress.android.ui.reader.tracker.ReaderTracker
@@ -220,9 +222,18 @@ class ReaderDiscoverFragment : ViewPagerFragment(R.layout.reader_discover_fragme
             OpenUrlType.INTERNAL
         )
         is ShowReaderSubs -> ReaderActivityLauncher.showReaderSubs(requireActivity())
+        is ShowSignIn -> navigateToLogin()
         else -> Unit // Do Nothing
     }
 
+    private fun navigateToLogin() {
+        if (BuildConfig.IS_JETPACK_APP) {
+            ActivityLauncher.showSignInForResultJetpackOnly(requireActivity())
+        } else {
+            ActivityLauncher.showSignInForResultWpComOnly(requireActivity())
+        }
+    }
+
     private fun showBookmarkSavedLocallyDialog(bookmarkDialog: ShowBookmarkedSavedOnlyLocallyDialog) {
         if (bookmarksSavedLocallyDialog == null) {
             MaterialAlertDialogBuilder(requireActivity())
diff --git a/WordPress/src/main/java/org/wordpress/android/ui/reader/discover/ReaderNavigationEvents.kt b/WordPress/src/main/java/org/wordpress/android/ui/reader/discover/ReaderNavigationEvents.kt
index b96ef3fe0123..d2dfeddde923 100644
--- a/WordPress/src/main/java/org/wordpress/android/ui/reader/discover/ReaderNavigationEvents.kt
+++ b/WordPress/src/main/java/org/wordpress/android/ui/reader/discover/ReaderNavigationEvents.kt
@@ -69,4 +69,5 @@ sealed class ReaderNavigationEvents {
     ) : ReaderNavigationEvents()
 
     data object ShowReadingPreferences : ReaderNavigationEvents()
+    data object ShowSignIn : ReaderNavigationEvents()
 }
diff --git a/WordPress/src/main/java/org/wordpress/android/ui/reader/discover/ReaderPostCardActionsHandler.kt b/WordPress/src/main/java/org/wordpress/android/ui/reader/discover/ReaderPostCardActionsHandler.kt
index ebface3b6753..e59d1cdba19b 100644
--- a/WordPress/src/main/java/org/wordpress/android/ui/reader/discover/ReaderPostCardActionsHandler.kt
+++ b/WordPress/src/main/java/org/wordpress/android/ui/reader/discover/ReaderPostCardActionsHandler.kt
@@ -12,6 +12,7 @@ import org.wordpress.android.R
 import org.wordpress.android.analytics.AnalyticsTracker
 import org.wordpress.android.datasets.ReaderBlogTableWrapper
 import org.wordpress.android.fluxc.Dispatcher
+import org.wordpress.android.fluxc.store.AccountStore
 import org.wordpress.android.fluxc.store.AccountStore.AddOrDeleteSubscriptionPayload.SubscriptionAction.DELETE
 import org.wordpress.android.fluxc.store.AccountStore.AddOrDeleteSubscriptionPayload.SubscriptionAction.NEW
 import org.wordpress.android.models.ReaderPost
@@ -100,6 +101,7 @@ class ReaderPostCardActionsHandler @Inject constructor(
     private val appReviewsManagerWrapper: AppReviewsManagerWrapper,
     private val seenStatusToggleUseCase: ReaderSeenStatusToggleUseCase,
     private val readerBlogTableWrapper: ReaderBlogTableWrapper,
+    private val accountStore: AccountStore,
     @Named(BG_THREAD) private val bgDispatcher: CoroutineDispatcher
 ) {
     private lateinit var coroutineScope: CoroutineScope
@@ -299,6 +301,10 @@ class ReaderPostCardActionsHandler @Inject constructor(
         recommendedBlogUiState: ReaderRecommendedBlogUiState,
         source: String
     ) {
+        if (!accountStore.hasAccessToken()) {
+            showSignInPrompt()
+            return
+        }
         val param = ReaderSiteFollowUseCase.Param(
             blogId = recommendedBlogUiState.blogId,
             blogName = recommendedBlogUiState.name,
@@ -311,6 +317,10 @@ class ReaderPostCardActionsHandler @Inject constructor(
         post: ReaderPost,
         source: String
     ) {
+        if (!accountStore.hasAccessToken()) {
+            showSignInPrompt()
+            return
+        }
         followSite(
             ReaderSiteFollowUseCase.Param(
                 post.blogId,
@@ -320,6 +330,20 @@ class ReaderPostCardActionsHandler @Inject constructor(
         )
     }
 
+    private fun showSignInPrompt() {
+        _snackbarEvents.postValue(
+            Event(
+                SnackbarMessageHolder(
+                    UiStringRes(R.string.reader_snackbar_err_cannot_follow_logged_out),
+                    UiStringRes(R.string.reader_snackbar_err_cannot_follow_logged_out_action),
+                    buttonAction = {
+                        _navigationEvents.postValue(Event(ReaderNavigationEvents.ShowSignIn))
+                    }
+                )
+            )
+        )
+    }
+
     private suspend fun followSite(
         followSiteParam: ReaderSiteFollowUseCase.Param,
         source: String
diff --git a/WordPress/src/main/res/values/strings.xml b/WordPress/src/main/res/values/strings.xml
index d08673ae4a48..ce989bfef621 100644
--- a/WordPress/src/main/res/values/strings.xml
+++ b/WordPress/src/main/res/values/strings.xml
@@ -2355,6 +2355,8 @@
 
     <!-- snackbar messages -->
     <string name="reader_snackbar_err_cannot_like_post_logged_out">Can\'t like while logged out of WordPress.com</string>
+    <string name="reader_snackbar_err_cannot_follow_logged_out">Log in to WordPress.com to subscribe to this site</string>
+    <string name="reader_snackbar_err_cannot_follow_logged_out_action">Log In</string>
 
     <!-- failure messages when retrieving a single reader post -->
     <string name="reader_err_get_post_generic">Unable to retrieve this post</string>
diff --git a/WordPress/src/test/java/org/wordpress/android/ui/reader/discover/ReaderPostCardActionsHandlerTest.kt b/WordPress/src/test/java/org/wordpress/android/ui/reader/discover/ReaderPostCardActionsHandlerTest.kt
index aa9580135f85..e20b1313018c 100644
--- a/WordPress/src/test/java/org/wordpress/android/ui/reader/discover/ReaderPostCardActionsHandlerTest.kt
+++ b/WordPress/src/test/java/org/wordpress/android/ui/reader/discover/ReaderPostCardActionsHandlerTest.kt
@@ -19,6 +19,7 @@ import org.mockito.kotlin.whenever
 import org.wordpress.android.BaseUnitTest
 import org.wordpress.android.datasets.ReaderBlogTableWrapper
 import org.wordpress.android.fluxc.Dispatcher
+import org.wordpress.android.fluxc.store.AccountStore
 import org.wordpress.android.fluxc.store.AccountStore.AddOrDeleteSubscriptionPayload.SubscriptionAction
 import org.wordpress.android.models.ReaderPost
 import org.wordpress.android.ui.pages.SnackbarMessageHolder
@@ -129,6 +130,9 @@ class ReaderPostCardActionsHandlerTest : BaseUnitTest() {
     @Mock
     private lateinit var dispatcher: Dispatcher
 
+    @Mock
+    private lateinit var accountStore: AccountStore
+
     @Mock
     private lateinit var resourceProvider: ResourceProvider
 
@@ -155,12 +159,14 @@ class ReaderPostCardActionsHandlerTest : BaseUnitTest() {
             mock(),
             seenStatusToggleUseCase,
             readerBlogTableWrapper,
+            accountStore,
             testDispatcher()
         )
         actionHandler.initScope(testScope())
         whenever(appPrefsWrapper.shouldShowBookmarksSavedLocallyDialog()).thenReturn(false)
         whenever(htmlMessageUtils.getHtmlMessageFromStringFormatResId(any(), anyVararg())).thenReturn(mock())
         whenever(readerBlogTableWrapper.getReaderBlog(any(), any())).thenReturn(mock())
+        whenever(accountStore.hasAccessToken()).thenReturn(true)
     }
 
     /** BOOKMARK ACTION begin **/