Howdy, sunnialison, and welcome to A2K.
A remailer would be a service through which mail was relayed. Typically, its an internet term; a user sends an email message to a central server, which then forwards the email, either to a preset list of contacts or according to addressing instructions contained within the original email. Frequently, remailers are used to provide a sender with anonymity, stripping any information which would identify the actual sender from all mail forwarded.
Regular postal mail remailers exist as well, providing essentially similar service, but for ink-and-paper mail.
Hope thats the info you wanted. Just jump right in if there's anything else you want to talk about - somebody will be along sooner or later. If you'd like, stop in over at
Welcome to New Members , say "Hi", and tell us a little bit about yourself.