Email Server

• Cliff - mailman from Cheers
• Newman - mailman from Seinfeld (particularily if your mail server is a bit of a pain in the ass)
• Pat - Postman with cat
• Hermes - messenger of the Greek/Roman gods
• Echo - Greek nymph, cursed by Hera to always repeat another's voice.
• Hedwig - Harry Potter's mail owl
• At one time Mindspring used the names of former postmaster-generals. That however led to quite a few that no one knew how to spell.