My company own a number of e-commerce sites, and we are trying figure out a scalable and effective solution for email. The stores are Django apps on Heroku. Each store needs to be able to send email receipts to customers after a purchase, and customers need to be able to send support emails to a support address.
In the past we have used a free Google Apps account set up with our own domain name, created the two email accounts, and sent receipts programmatically through Django. I am not completely pleased with Google Apps for a number of reasons, including customer service and the daily sending limits.
I've looked into services like Postmark for sending mail, but of the services I've researched, they all require being able to receive emails at any address you send from. What would I do for receiving email? We want to keep our setup as simple as possible and would prefer to send and receive emails through the same service.