Thanks Bill! We appreciate your support!

Hi Gary,
If you put the address in the Reply-to: field, we will pass that address in the "to" field. In this case, the "to" POST field will be "comment-8d7fe0883fab@mydomain.com ".

Yes, we retry for approximately 5 days. The retry protocol works similarly to that of mail servers where the time between retries is incremented the more errors we get from your web server.

Yes you can use this if you are a Heroku customer. You can take a look at a great example here: http://bit.ly/94xNbS