From the bug report , which also has a screen shot mock up "This would make it easier to identify the folders of diffrent mail accounts. This would also make sense for the top account nodes."
To significantly speed up message deletion, us shift+delete, instead of just delete. This will skip the ability to undo the message deletion.If you still have difficulty, please with speed please file a support request https://support.mozilla.org/en-...
You should find that the current version 140 is very fast. If you still have difficulty, please file a support request https://support.mozilla.org/en-US/questions/new/thunderbird
Because normal deletion provides the ability to undo the message delete action. And because file space is not reclaimed until an imap purge+Thunderbird compact are done, and that does not come automatically with message deletions.But if you signific...
