MailerCheck vs Mailgun

Choose MailerCheck if you clean a campaign list without leaving the email platform you send from. Choose Mailgun if you build an application that sends receipts and password resets. MailerCheck is bought as credits paid for once and never expiring, while Mailgun starts on a free plan and moves to paid plans billed by the month.

A marketer with a list headed for a campaign is the buyer MailerCheck serves. It pulls lists straight from several sending platforms and writes the verdicts back, which keeps the clean inside the tools a team already uses. It works alongside the platform that sends the campaign, and that platform stays in place. Its limit is scope, since ongoing deliverability monitoring is handled by a sibling product, MailerSend.

The application, not the list, is where the work starts. Mailgun's verification flags addresses with a history of marking mail as spam and domains tied to fraud or bot signups. It also delivers the mail an application sends, through an API or an SMTP relay. Its limit is campaigns, because newsletters with a drag-and-drop builder sit with a companion product from the same owner, Mailjet.

MailerCheck's users praise how easy it is to set up and the simple interface. They also like that list cleaning improves deliverability and open rates, and they value responsive support. Among Mailgun reviewers, praise goes to quick support that solves problems, even on the free plan, and to good delivery. Some Mailgun reviewers report accounts or domains disabled or locked with little explanation. Others find support slow or unhelpful on setup or account problems.

A marketing team that imports an aged list before each campaign needs every address checked first. MailerCheck removes duplicate addresses from the uploaded list at no charge as part of the clean. Mailgun describes an ecommerce marketing platform that sends a very large volume of email each month through it and verifies sending domains at scale. The vendor reports that the platform dropped an unneeded domain verification email flow entirely.