Updates: Constant Contact Integration
You've been able to sync one or more groups with a mailing list in your MailChimp account for a long time. Now, you can do the same with Constant Contact!
To enable this, in SimpleChurch: go to Setting > Services, and click the "Enable" radio button. Authorize your account, Fill in the fields, and you're done!
Then, whenever you add people to the selected groups, they'll be added to Constant Contact