I'm uncertain if this is the right forum for this topic, but I would greatly appreciate any help you all could give me on this..

I'm with a webhosting company that offers unlimited autoresponders. Unfortunately they're very simple ones that send a message back whenever anyone writes to a certain email address.

Basically what I'm looking for, is an autoresponder that will reply when someone writes to a certain address AND has a certain subject line (and the autoresponder would reply accordingly)

For example, something that could reply with more information when someone wrote to webmaster@something.com with "more info" in the subject line, while at the same time, someone who wants to know about pricing could write to that same address with "pricing info" - and get the corresponding autoreply for pricing.

Does such an autoresponder exist? and better yet, could I find a free one that does this?