KMail. It hangs so frequently that I have a shortcut-key combination to kill -9 akonadi (ctrl+alt+k), which then respawns and fetches mail again. At the end of

KMail. It hangs so frequently that I have a shortcut-key combination to kill -9 akonadi (ctrl+alt+k), which then respawns and fetches mail again. At the end of every startup it used to present a dialog 'Mail has encountered a fatal error and will now close'. If you clicked 'OK' the programme would terminate. Fortunately the dialog wasn't modal, so you could carefully tuck it into an unused corner of the screen and continue as normal. Eventually I did some googling and deleted ~/.local/share/local-mail/templates which got rid of it (but I lost the templates) That said, I still find the UI much less fiddly than gmail, which is why I use both. In fact I'm writing this comment while I wait for Kmail to re-load it's mailbox, so I can reply to an email.