diff --git a/RELEASE-NOTES.txt b/RELEASE-NOTES.txt
index 54451899d571..985b41e8d298 100644
--- a/RELEASE-NOTES.txt
+++ b/RELEASE-NOTES.txt
@@ -1,5 +1,6 @@
 18.6
 -----
+* [**] Comments: Users can now follow conversation via notifications, in addition to emails. [#17363]
 * [**] Block editor: Block inserter indicates newly available block types [https://github.com/wordpress-mobile/gutenberg-mobile/pull/4047]
 
 
diff --git a/WordPress/Classes/Utility/BuildInformation/FeatureFlag.swift b/WordPress/Classes/Utility/BuildInformation/FeatureFlag.swift
index 7eb571d5780a..946e99188438 100644
--- a/WordPress/Classes/Utility/BuildInformation/FeatureFlag.swift
+++ b/WordPress/Classes/Utility/BuildInformation/FeatureFlag.swift
@@ -61,7 +61,7 @@ enum FeatureFlag: Int, CaseIterable, OverrideableFlag {
         case .domains:
             return BuildConfiguration.current == .localDeveloper
         case .followConversationViaNotifications:
-            return false
+            return true
         }
     }
 
diff --git a/WordPress/Classes/ViewRelated/Reader/ReaderCommentsViewController.m b/WordPress/Classes/ViewRelated/Reader/ReaderCommentsViewController.m
index 5c1e426b1122..dab13e89b6d9 100644
--- a/WordPress/Classes/ViewRelated/Reader/ReaderCommentsViewController.m
+++ b/WordPress/Classes/ViewRelated/Reader/ReaderCommentsViewController.m
@@ -1401,34 +1401,31 @@ - (void)handleFollowConversationButtonTapped
 - (void)handleNotificationsButtonTappedWithUndo:(BOOL)canUndo completion:(void (^ _Nullable)(BOOL))completion
 {
     BOOL desiredState = !self.post.receivesCommentNotifications;
-
-    NSString *successTitle = desiredState
-        ? NSLocalizedString(@"In-app notifications enabled", @"The app successfully enabled notifications for the subscription")
-        : NSLocalizedString(@"In-app notifications disabled", @"The app successfully disabled notifications for the subscription");
-
-    NSString *failureTitle = desiredState
-        ? NSLocalizedString(@"Could not enable notifications", @"The app failed to enable notifications for the subscription")
-        : NSLocalizedString(@"Could not disable notifications", @"The app failed to disable notifications for the subscription");
+    PostSubscriptionAction action = desiredState ? PostSubscriptionActionEnableNotification : PostSubscriptionActionDisableNotification;
 
     __weak __typeof(self) weakSelf = self;
+    NSString* (^noticeTitle)(BOOL) = ^NSString* (BOOL success) {
+        return [weakSelf noticeTitleForAction:action success:success];
+    };
+
     [self.followCommentsService toggleNotificationSettings:desiredState success:^{
         if (completion) {
             completion(YES);
         }
 
         if (!canUndo) {
-            [weakSelf displayNoticeWithTitle:successTitle message:nil];
+            [weakSelf displayNoticeWithTitle:noticeTitle(YES) message:nil];
             return;
         }
 
         // show the undo notice with action button.
         NSString *undoActionTitle = NSLocalizedString(@"Undo", @"Button title. Reverts the previous notification operation");
-        [weakSelf displayActionableNoticeWithTitle:successTitle message:nil actionTitle:undoActionTitle actionHandler:^(BOOL accepted) {
+        [weakSelf displayActionableNoticeWithTitle:noticeTitle(YES) message:nil actionTitle:undoActionTitle actionHandler:^(BOOL accepted) {
             [weakSelf handleNotificationsButtonTappedWithUndo:NO completion:nil];
         }];
 
     } failure:^(NSError * _Nullable error) {
-        [weakSelf displayNoticeWithTitle:failureTitle message:nil];
+        [weakSelf displayNoticeWithTitle:noticeTitle(NO) message:nil];
         if (completion) {
             completion(NO);
         }
diff --git a/WordPress/Classes/ViewRelated/Reader/ReaderCommentsViewController.swift b/WordPress/Classes/ViewRelated/Reader/ReaderCommentsViewController.swift
index ba4ab35a0d13..371e7bba41e9 100644
--- a/WordPress/Classes/ViewRelated/Reader/ReaderCommentsViewController.swift
+++ b/WordPress/Classes/ViewRelated/Reader/ReaderCommentsViewController.swift
@@ -11,4 +11,26 @@ import Foundation
         let bottomSheet = BottomSheetViewController(childViewController: sheetViewController)
         bottomSheet.show(from: self, sourceBarButtonItem: sourceBarButtonItem)
     }
+
+    // MARK: Post Subscriptions
+
+    /// Enumerates the kind of actions available in relation to post subscriptions.
+    /// TODO: Add `followConversation` and `unfollowConversation` once the "Follow Conversation" feature flag is removed.
+    @objc enum PostSubscriptionAction: Int {
+        case enableNotification
+        case disableNotification
+    }
+
+    func noticeTitle(forAction action: PostSubscriptionAction, success: Bool) -> String {
+        switch (action, success) {
+        case (.enableNotification, true):
+            return NSLocalizedString("In-app notifications enabled", comment: "The app successfully enabled notifications for the subscription")
+        case (.enableNotification, false):
+            return NSLocalizedString("Could not enable notifications", comment: "The app failed to enable notifications for the subscription")
+        case (.disableNotification, true):
+            return NSLocalizedString("In-app notifications disabled", comment: "The app successfully disabled notifications for the subscription")
+        case (.disableNotification, false):
+            return NSLocalizedString("Could not disable notifications", comment: "The app failed to disable notifications for the subscription")
+        }
+    }
 }