Starting several days ago, emails that I sent to myself, or cc:ed myself on, would briefly show up as usual in my Inbox, but would within a few minutes disappear. Even more oddly, they do not then appear in Trash or Junk. I can still see the email in my Sent folder, but if I take the email and move it from Sent to Inbox, the same thing happens (except now the mail is completely lost, as it's neither in Inbox nor Sent). At first I thought this was because I marked as Spam an email that was spam but that falsely had my own name in From: . But if that were the problem, I would presumably be seeing my emails in the Junk folder -- and I don't. Has anyone else encountered this? Thank you.