I've used pmail on my personal computer for about 20 years. A few days ago it seemed like pmail auto- updated itself altho I didn't think that was possible. The inbox font looked different, etc. But I thought everything was working so I didn't worry about it.

Then I found out that distribution list emails I'd sent out had NO info in the From field - no name, no email address. So people thought the email was spam and deleted it without reading it! I tried to open the help interface via the Help menu but the Help stuff didn't appear on the screen.

I saw that the version I had was 4.73 so I went to the website and saw there is a more recent version. Tonight I installed 4.80 update thinking maybe that would solve these problems.

No, it did not. AND I sent a single email (not thru dist list) to one of my own email addresses, and there was no From info in that email, either!! Plus the outgoing emails were using sig text that I stopped using years ago.

I found a post on this forum about fixing the Help screen not showing up after 4.80 install, and that worked. But I still couldn't remember where the heck the info for the From field got entered in pmail.

I finally found the place to enter my name in Tools/Options/Basic Settings. And then found where to put my email address in Internet Mail Options/General. But sheesh! I spent hours trying to figure all this out. Why would an upgrade cause the help screen to be out of range of the monitor, remove my name and email address from From field settings, and use an old sig, but otherwise seem to function OK? (I sure hope everything else is OK.) POP and SMTP, mail folders and emails - all that was untouched.

FYI for your diagnostic purposes:
Windows 10 21H1
Windows Security has all features turned off because I installed the basic version of Bit Defender about a week ago. I did not notice any problems from that.

I really don't want to switch to any other email program, but it's very troubling to me that this seemed to happen without me changing anything while 4.73 was running.