I have an issue with an IMAP work mail account that I need notifications for: Thunderbird does not notify me about new e-mails, even though I've set battery use to unrestricted, folder poll frequency to 15 minutes and configured notifications for all new mail.
I have to manually open the app and swipe to refresh to check if any messages have arrived, which doesn't work for me, I can't manually refresh e-mail every fifteen minutes to make sure I don't miss any potential work.
In stock OS Thunderbird worked just fine. What am I missing? Gmail notifies me about new mail just fine, if I can't get Thunderbird to work in GrapheneOS I'll end up adding this account to Gmail, which is kinda ironic since I switched to get some privacy from Google. :-\