I found the mail. I was actually in my SPF folder and not in the inbox. For some reason a filesystem scan didn't show the mail.

Sorry for the false alert. 

From time to time Pegasus Mail crashes when I open an HTML mail. Unfortunatekly the crashes are never reproducible. I already sent Martin Ireland (the author of BearHTML) a few examples, but I am not sure, if he could fix the issues or if the issue is in Pegasus Mail.

But it does happen very rarely, so I can live with just restarting Pegasus Mail. The real issue now is, that I lost at least one mail in the last crash. I know I lost it, because it's a newsletter, that is send out very rarely and because of it, I wrote a mail to a friend and now I wanted to forward the whole mail to him and it's gone now.

I could only explain this, that Pegasus Mail does some cleanup or re-indexing, if you restart it after it crashed and the mailbox is still locked or the mails aren't properly written to the disk after they were received.

> From time to time Pegasus Mail crashes when I open an HTML mail.
> Unfortunatekly the crashes are never reproducible. I already sent
> Martin Ireland (the author of BearHTML) a few examples, but I am not
> sure, if he could fix the issues or if the issue is in Pegasus
> Mail.
>
> But it does happen very rarely, so I can live with just restarting
> Pegasus Mail. The real issue now is, that I lost at least one mail
> in the last crash. I know I lost it, because it's a newsletter, that
> is send out very rarely and because of it, I wrote a mail to a
> friend and now I wanted to forward the whole mail to him and it's
> gone now.

Strange, I've never seen a crash cause data loss.  I assume that this newsletter was in the new mail folder at the time of the crash.  That would mean that there would have been a separate *.CNM file containing this message in the new mail list.  The only thing that comes to mind is that there is something else also accessing this same file at the same time it's being accessed by WinPMail.   Are you running any sort of anti-virus on the WinPMail mail directories?
>
> I could only explain this, that Pegasus Mail does some cleanup or
> re-indexing, if you restart it after it crashed and the mailbox is
> still locked or the mails aren't properly written to the disk after
> they were received.

If you are running some very aggressive drive caching then I suppose this could happen but if it's just WinPMail crashing I cannot see this crash affecting the actual files in the new mail directory.

Hi Kidman, 

Just my 5 cent ... I also though I "lost" emails several times after crashes but later found them actually placed somewhere completely unexpected in the my fairly long folder tree.

Cheers

Thomas