Are you sure those files remain in /tmp after exiting thunderbird? I just tested this locally, when composing an e-mail a file /tmp/nsemail.eml was created, but after I exited thunderbird it was deleted.
** Changed in: thunderbird (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1853007 Title: nsemail and nscopy files left in /tmp To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1853007/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs