Mailsheep

A curious term!

After a quick search, I found that "mailsheep" is a playful name for a fictional character, a sheep that delivers mail. It's likely a humorous take on the traditional postal service, where sheep are not typically associated with mail delivery.

If you're interested, I can try to find more information about this character or the context in which it was used. Alternatively, if you'd like to create a story or scenario involving a mailsheep, I'd be happy to help with that too!