I have got the same problem. Obviously K-9 does not delete all the emails on the server, although I deleted them in K-9.
I always have to delete them in a Web interface, which is really annoying. Uwe -------- Ursprüngliche Nachricht -------- Von: Arnaud Julien <c176...@gmail.com> Gesendet: 25. Juli 2017 13:04:12 MESZ An: K-9 Mail <k-9-mail@googlegroups.com> Betreff: [k-9-mail] How to delete all messages in the Trash directory? Hello everybody, My Trash directory is 790 Mb and I want to delete everything in it. When I try to do this nothing happens and after a while the application stopped working. Where and how can I delete all these unwanted mails? Thanks in advance for any advice. Best regards Pascal -- Diese Nachricht wurde von meinem Android-Mobiltelefon mit K-9 Mail gesendet. -- You received this message because you are subscribed to the Google Groups "K-9 Mail" group. To unsubscribe from this group and stop receiving emails from it, send an email to k-9-mail+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.