There's an excellent comparison of transactional email providers which can be of help: http://socialcompare.com/en/comparison/transactional-emailing-providers-m

There's an excellent comparison of transactional email providers which can be of help: http://socialcompare.com/en/comparison/transactional-emailing-providers-mailjet-sendgrid-critsend http://socialcompare.com/en/comparison/transactional-emailin... On another front, we use to use mailchimp - great product, but can start to get expensive when you don't use any of its features, so we switched to mailjet for our largest list. Most important point is that rolling your own is more headache and time investment than its worth as compared to the costs associated with these services. Still setup your SPF records and domainkeys though!