In reply to Jason Lemieux.

The most reliable native subscribe to comments feature we've found (we've tried them all and even written helper plugins for Subscribe to Comments Reloaded) is Satollo's Comment Plus. Comment Plus has the bonus of giving you optional single image upload for commenters as well (very nice for design oriented or even fitness sites).

Comment Plus isn't free but at $10 for an unlimited developer license, it's really donationware (rather than commercial pricing). We've generally found Satollo's code very reliable and easy to extend and Stefano has a lot of experience with email (Newsletter Pro author).

I look forward to testing Postmatic and Comment Plus head to head on client sites. I prefer native generally but my experience with Postmatic as a user has been good. Offering Epoch to the community is a fantastic gift. May Epoch put many stakes into the heart of Disqus.