When making the move to MailChimp, we were excited to have a resource that integrates with Raiser’s Edge. Now after using Chimpegration, we’re even more excited. It’s so easy to use from adding records into mail chimp and managing campaign results back over. The service has also been so responsive and thorough: there was an issue with the API Code that was fixed in a couple of hours. I highly recommend Chimpegration.