Forum Moderators: open
It appears some people lost new Stickymail from the update until just a few moments ago. It would be about 1 out of 5. There is no recovery for the error. Members with capital letters in there membername were the ones most affected on both send and receive.
If you had "email notification" on and received a notice that a member sent you an email, you may want to ping that member and ask them to resend.
Other than that, there is nothing we can do.