translation problem resulting in multiple IMAP trash folders
In the attached picture, you will see three separate folders for deleted items: 1) "Gelöscht", where deleted items go when I use the the web interface of my provider 2) "Papierkorb" where K9 Mail (on Android) puts deleted messages (which I can easily configure) 3) "Papierkorb", which is actually shown as "Trash" in K9 or the web interface and is Thunderbird's default folder.
It is my guess that there is no industry standard, which is a pity. I suggest that Thunderbird should at least show the real folder names. This way, I could try to configure all mail clients to use the same folder. A second suggestion, but this might be tough, is that Thunderbird could find out the pre-existing trash folder when adding an email account.