The Eudora software package takes care of most of the pain and suffering associated with getting connected. Email is usually transacted twice a day, when the atmospherics are right. Messages from the ship are sent directly to the recipient. Eudora takes care of filtering messages incoming to the ship. We have also successfully sent and received messages with various binary attachments, with Eudora doing the decoding offline.
Any traffic going to the ship is addressed with the intended recipient's name in the subject field.
Additionally, accounting information for billing purposes is almost nonexistent. If we had the time to do this and could get people to sign their names to be responsible for any bills incurred, it would be good to have every cruise. There are a couple of other ways to e-mail the ship. The only problem with this is it is not very private and there is a problem sending over 2Kb of information from the ship. The Captain or Second Mate will distribute the mail as necessary.