TOPIC: Email Registrants - Send Batches and Keep Records

DT Register is awesome. Here's an email feature idea:

Many PHP mail programs have the ability to configure the sending rate of emails, so that users can set how many messages are sent per batch, how many seconds between batches, and how long to wait for script timeouts. The idea is to protect those of us on shared servers, where server resources are capped (bottlenecking the mail script due to cpu or ram restrictions), or where too any emails sent within a specific time period will cause the site to be blacklisted.

Besides that, it'd be nice if we could go back and see what emails have been sent to users by the system; if not on a per-registration basis, at least on a mass-email basis (some conferences have multiple admins, and the right hand might not know what the left hand is doing!)

Thanks!