I logged into my email via the webmail thing, and every single email I have recently have, every email in my old-message folder, along with every setting I had for the webmail system is gone. I haven’t logged in, in the last few days, but wanted to know if maybe this has happened to others… or maybe it hates me… 
Email is gone
This appears to have happened to me too
What is interesting is that for me in the Control Panel, under Disk Usage / Disk Usage By Address, I have email accounts listed twice – once with “no address (name)” and correct disk/file usage, and once with “email@address” with 0 file usage.
My guess is that webmail/MAPI is connecting to the latter, resulting in an “empty” mailbox. Hopefully the first indicates the data is still there somewhere…
Not sure if it is related or not but I received an email on November 5 that my account was being moved to a new server. I wonder if there was an issue moving the corresponding mailboxes.
Opened a support ticket 4 hours ago – no response yet.
Yeah, this happened to me too…in addition to all my sites being down and a lot of my directories missing after the migration.