FollowUpThen Email Reminder – Free, Secure and Easy
http://www.followupthen.com/

It’s easy, free, safe and secure. FollowUpThen is the most efficient reminder on the market. It is also safe and secure. It sends only one email reminder per request (ie, they will not spam you, or your recipient). It takes only seconds to use. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog. This has been added to World Wide Web Reference Subject Tracer™ Information Blog.