Hello, I'm running a PC under Win 7 pro 64bits, 8Go, Intel Core 4Ghz and Thunderbird 68.8.1 (32bits). I also have an Androïd Samsung tablet and my smartphone both running my mail system. I have 2 e-mail mail accounts. I used to be pop. but now imap. The size of the whole mail data is around 4 Go (according to Mozbackup), while I keep deleting as much as possible. I think it's probably 3 to 4 times bigger than normal. It is very slow and request constant compacting directories. I guess my thunderbird is mixed up. If I look at my mail directory, I see the following sub directories : imap.gmail.com, pop.gmail.com, pop.gmail-1.com, pop.googlemail.com (?) pop.googlemail-1.com (?), pop.laposte.net, pop.laposte-1.net, pop.laposte-2.net. Obviously, some are not needed. Also, you can notice the SENT and DRAFT directories are duplicated on one mail account. I would not like to lose the contents of my local directories and possibly in and out directories. How can I do that. Thank you for your help.