Campaign Monitor (and other services) Transactional Email Support

We would like to use a single service to handle transactional emails regardless of whether the order is entered into our order management system or via the website.  We use Campaign Monitor for our newsletters, and Campaign Monitor can handle the Transactional Emails, ie order confirmations, tracking emails, abandoned cart emails, etc, but AmeriCommerce does not support that on their end. Handling these through Campaign Monitor would also give us enhanced statistics about how customers interact with these emails.

I know that SendGrid and a couple other services also can handle transactional emails.