If you?ve spent any time at all online, you?ve likely received an email message sent as an ?autoresponder,? even though you wouldn?t necessarily know it.It may have been as simple as that familiar, inter-office reply that tells you the recipient is ?out of the office.? Yes, that?s an autoresponder.More common than that 'out of the office' reply is the autoresponder used as a marketing tool - a very valuable marketing tool!If you?re selling on-line, or if you want to, here?s why autoresponders ar...