Can I use Postmatic to only send emails and not process replies?
Sure. If you aren't a fan of commenting but would still like to send your posts via email we can handle that for you.
Be sure to disable commenting on new posts within WordPress. Your posts will still be mailed via Postmatic however the template will be a bit different and people will not be prompted to reply.
If a subscriber does reply we'll go ahead and forward that email along to you.