When comparing SparkPost vs Mailgun, the Slant community recommends Mailgun for most people. In the question“What are the best transactional email services?” Mailgun is ranked 1st while SparkPost is ranked 8th. The most important reason people chose Mailgun is:
Mailgun is included and configured by default in Meteor.js. So for projects which are built using Meteor, it's very easy to integrate Mailgun.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Built for developers
SparkPost supports both SMTP and REST APIs and has client libraries supportings many languages including nodejs, python, php, ruby, go, elixir, and java.
Pro Best Inboxing of any provider by almost 10 points, supported by third party data
SparkPost delivers more messages to the inbox than any other provider, not just to the recipient, to the actual inbox. So while almost every company will claim high 90's on deliverability, Sparkpost is the only one that's been able to demonstrate high 90's on inbox placement as well. This has real revenue impact.
Pro Responsive and helpful support
The support team at SparkPost is extremely responsive to questions and goes above and beyond to solve any challenges and help customers get the most out of their messaging.
Pro Integrates by default with Meteor.js
Mailgun is included and configured by default in Meteor.js. So for projects which are built using Meteor, it's very easy to integrate Mailgun.
Pro Developer-focused
Mailgun has a RESTful API with libraries and code examples in curl, Ruby, Python, PHP, Java, C#, Go.
Cons
Con Bad customer service
Con Sub-par support
It has been reported several times that Mailgun's support is not excellent. Most of the time, they require a lot of time to respond to questions or support queries.