Some of our customers have been asking for an automatic email notification to tell them when their campaign’s been sent. They just want a little extra confirmation and feedback. So we added that in our recent upgrade, plus a weekly account status email:

To turn them on, go to your Account Settings -> Contact Info

and check the boxes for the alerts you want.

You can also get alerts via RSS using Chimp Chatter, and you can access stats about campaigns on your iPhone.