Notification settings are pro features

README.md

@@ -43,8 +43,7 @@ This app starts a foreground service with a low priority status bar notification
 
 * Account/identity colors
 * Colored stars ([instructions](https://github.com/M66B/open-source-email/blob/master/FAQ.md#user-content-faq107))
-* Notifications per account (requires Android 8 Oreo or later)
-* Notification sound per sender (requires Android 8 Oreo or later)
+* Notification settings (sounds) per account/folder/sender (requires Android 8 Oreo)
 * Configurable notification actions
 * Snooze messages ([instructions](https://github.com/M66B/open-source-email/blob/master/FAQ.md#user-content-faq67))
 * Send messages after selected time

app/src/main/java/eu/faircode/email/AdapterFolder.java

@@ -642,6 +642,12 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
                 }
 
                 private void onActionCreateChannel() {
+                    if (!Helper.isPro(context)) {
+                        LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(context);
+                        lbm.sendBroadcast(new Intent(ActivityView.ACTION_SHOW_PRO));
+                        return;
+                    }
+
                     folder.createNotificationChannel(context);
                     onActionEditChannel();
                 }

app/src/main/java/eu/faircode/email/AdapterMessage.java

@@ -1249,6 +1249,12 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
 
                 @TargetApi(Build.VERSION_CODES.O)
                 private void onActionCreateChannel() {
+                    if (!Helper.isPro(context)) {
+                        LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(context);
+                        lbm.sendBroadcast(new Intent(ActivityView.ACTION_SHOW_PRO));
+                        return;
+                    }
+
                     NotificationChannel channel = new NotificationChannel(
                             channelId, from.getAddress(),
                             NotificationManager.IMPORTANCE_HIGH);