[ubuntu] IMAP Email Accounts: why is my email continually disappearing?

view story

http://ubuntuforums.org – I've now had a repeated experience of my emails disappearing - not deleted, just disappearing - since I converted from POP to IMAP. How do I stop this perverse behaviour? On (bad) advice I converted my Evolution email client account from POP to IMAP. ALL email, in every folder, in client and host server just disappeared. I had no opportunity to even take a back-up in Evolution. My only backups were in POP mode. Having reset Evolution to POP mode and restored from backup I was able to export my emails to mbox files, loosing only about 5% of emails which were not in the newest Evolution backu (Hardware)