About
SparkPost is a developer-centric email delivery service. That means pretty much everything described in this guide can be done through the SparkPost API.
Features
About
Postmark helps you stop worrying if your emails made it to the inbox, and get back to focusing on what matters—building great products. Send transactional and marketing emails and get them to the inbox on time, every time.
Compare SparkPost to other tools 
See how SparkPost stacks up to these other services.
If you are serious about your Newsletter, try LetterBucket. Built to grow your audience, not just send emails.
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