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
Pricing
- Starts At: $89
About
Mailster is an easy to use Email Newsletter Plugin for WordPress. Create, send and track your Newsletter Campaigns without hassle
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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