In my case, the problem happened thus: My dad has POP email and uses Evolution. After I upgraded him to Oneiric and installed the version of Evolution present on it, the application asked me to convert the mailbox format, so I did. Now, whenever he sends an email, this message pops up. I tried deleting the old mbox account (which had become set to $USERNAME@localhost), but this did not fix the problem.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to evolution in Ubuntu. https://bugs.launchpad.net/bugs/850106 Title: Fails to append sent mail to mbox in post-processing Status in “evolution” package in Ubuntu: Confirmed Bug description: Whenever I send an email from Evolution 3.1.91 using Ubuntu 11.10, I get this error message: The reported error was "Failed to append to mbox:///home/[redacted]/.local/share/evolution/mail/local#Sent: Invalid folder URI 'mbox:///home/[redacted]/.local/share/evolution/mail/local#Sent' Appending to local 'Sent' folder instead.". Package version is: Evolution 3.1.91-0ubuntu1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/evolution/+bug/850106/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

