Auto logoff due to inactivity is always hung by Mail app

I updated my profile -- thanks. I also updated to 10.12.5, but problem immediately re-occurred. Only happens when I sit down in front of a black screen (seemingly a logoff has occurred), right -click, and the error msg displays on the black screen. If I do nothing then, after 30 seconds or so it goes ahead and displays the logon screen. Guess I'll have to call Apple support. Here's a photo:

When I set up the profile, Yosemite was the only choice. I was Sierra 10.12.4. I thought I was notified when a new release came out but when I checked, 10.12.5 was available. I updated and will see if that solves the problem. Thanks, and I'll report back later.

Thanks, Viking. That seems logical. But I've had all my email accounts (iCloud, Outlook, ATT.net, and Exchange) set up for over two years. This problem just began a couple months ago. Maybe one of them -- or Apple -- changed something that is causing this. Guess it's not a big deal.