FreshPorts encountered its first corrupted cvs-all email today. It handled it correctly. It errored out, put the emails aside in the retry queue, and sent me a notice.
Af first, I thought the email had been corrupted on the way into my system. But after checking the above URL, I realised it was bad at the source. Then Rink Springer pointed out the followup forced commit. Apparently the first commit was a mistake which was corrected by the forced commit.
All is well. :)