KMail is a pretty good app, except that it's slow as glacier. If I select a few thousand spam emails in KMail (4.3.2) sitting on my IMAP server, and I try to delete them, KMail laboriously iterates through them deleting them one at a time and updating the GUI after every deletion. I'd say it averages about 4 or 5 emails deleted per second. Yes, for a few thousand emails this adds up to 10-15 minutes of waiting.
I got tired of waiting, so I decided to try out Mutt for the first time. In Mutt apparently you can delete a folder full of emails by pressing
D and then specifying
~s .* as the search pattern. Mutt deleted 8,000 spam emails for me instantaneously.
This is what I get when I ignore the collective wisdom of the Linux group-mind. I've long heard that Mutt is good but I never bothered trying it, because Thunderbird and KMail and friends were "good enough".
Complacency, my old nemesis. You have beaten me again. But I am now going to give Mutt a good try. Next on the list is zsh.