Android 10 Notification Issues

Hi Lupercus

Not getting notifications for new emails can have a couple of reasons. You have already ruled out some of these, but I’m listing them here anyway so others who are in a similar situation will have a hopefully complete list to check against.

  1. Automatic sync is disabled. If K-9 Mail isn’t checking for new messages not getting any notifications is to be expected. Make sure ‘Account settings > Fetching mail > Folder poll frequency’ is set to something other than ‘Never’. Also, ‘General settings > Network > Background sync’ controls in which situations automatic sync is allowed.

  2. Notifications are disabled in K-9 Mail. Make sure ‘Account settings > Notifications > New mail notifications’ is checked. If you’re testing notifications by sending a message to yourself, make sure to also check ‘Include outgoing mail’. Otherwise new messages with your email address as sender address will not trigger a notification.

  3. Notifications are skipped because of K-9 Mail’s Quiet Time setting. Check under ‘General settings > Notifications > Quiet Time’.

  4. Notifications are disabled via the system’s notification configuration. On modern Android versions users can disable notifications, change the alert sound, and many more things. You can get to the system screen to configure notification via ‘Account settings > Notifications > Notification settings’.

  5. Notifications are disabled because the system’s ‘Do No Disturb’ mode is active. (On modern Android versions) users can configure notifications to override the DND mode. How DND mode is enabled and disabled depends on the Android version you’re using.

  6. Notifications are being generated, but messages are marked as read on the server. When this is detected by K-9 Mail the notification for that message is removed. This is done because messages that are marked as read are not considered to be a new message.

  7. The app is killed with active notifications (maybe because the system is running low on memory). Then it is restarted and generates a new notification. This new notification will cause all old notifications to be lost. This is a bug in K-9 Mail that we intend to fix soon.

  8. There’s an unknown bug in the app. If you can rule out all of the above, it’s probably a bug we don’t know about yet :frowning_face:

I hope this list helps you to track down the problem.

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