Hey there, I have the issue that I am only getting new-mail-notifications (sound or number indicator at the windows bar) for my mail on the top. I have 4 email adresses in total, all from the same provider, but it only works for the on on the top.
Notifications in Mailspring fire for any new unread message that arrives in an inbox folder, regardless of which account it’s in — there’s no account-level filtering in the notification code. If you’re only getting notifications for one account, the most likely cause is that the other three accounts aren’t syncing properly. Check each account’s sync status by clicking on it in the sidebar — if you see a “Sync Error” badge or the inbox isn’t updating, that account’s sync engine may have stalled. Try going to Preferences → General → Local Data → Reset Cache, or remove and re-add the affected accounts. Also confirm that all four accounts have notifications enabled in your OS notification settings.