I used to have access to the greatest Craigslist email script (for dating affiliates) ever. The site has since been shut down but this is how it worked:

Anytime someone replied to your Craigslist dating ad, the script would reply with your written message at a designated time, say 5 minutes, or 12 hours, whatever you wanted. If the guy replied to that message, it would then send another one at another designated time. You could do this up to four times. The script also kept track of your "relationships", aka the email address that have been replying to your ad and how many of your messages went out to that email address so far (1-4 messages, or 25%-100% completed relationship).

You had the ability to set up "characters" (which is how the script tracked relationships). Each character obviously had their own gmail account (through POP3), you could name them and assign them a Craigslist city. It was a web-based interface and really kicked ass.

I'm sure at least a couple of you out there may have used it. A guy on DP started a forum based around this tactic and World-Dating-Partners. Any idea if this script is still around or how much would it costs to have this built?

How much will you pay for a desktop application like this?

I could do it if I found enough customers