For reasons I don’t understand, the following steps got the default Mail app functioning as expected;
-
Disable Murena account sync for mail
Settings (app) > Accounts > Murena > Account sync > uncheck mail -
Remove existing Murena account from Mail
Mail (app) > Settings > Accounts > Murena > Ellipsis icon > Remove account
- Export existing settings from Thunderbird to file
Thunderbird (app) > Settings > Export settings > Export
- Import settings into Mail using file instead of adding account manually
(Here I followed the prompts but don’t remember my exact steps. I input the passwords for each account when prompted.)
I am pleased to report the Mail app is now working good as new.!If I had to guess, I’d say whatever protocol Murena is using to create the account within Mail might have something amiss or is outdated. Perviously removing the Murena account then re-adding manually within Mail still caused it to crash regularly. I’m unclear what’s in the Thunderbird export file that makes it play nice with Mail all the sudden but hey this workaround exists for the time being!