A couple questions:
- What language/framework do you guys use?
- How secure are the transactions?
- What do you guys use for transactional emails (welcome, password recovery, donation receipts, etc)
I'm the Product Manager of PostageApp (http://postageapp.com) and I'd love to give you a hand with transactional emails, if you are so inclined! Let me know, keep up the awesome work!
1) Rails 2) WePay handles our transactions so they're secure - we use their new API. We highly recommend them. You can learn more about their security here: https://www.wepay.com/about/security 3) We actually already use Postmark. That being said, we'll check out PostageApp too :)
As for the mail, no worries! Let me know if you have any questions about us, or if you just want a bit of feedback regarding your transactional designs and copy.
Cheers!