MailSlurp vs smtp4dev

MailSlurp plans

• FreeFree
• Starter$19.99 a month
• Pro$49.99 a month
• Growth$129.99 a month
• EnterprisePriced on request

smtp4dev plans

No prices published.

Pick MailSlurp if…

It suits developers building email or SMS workflows and teams testing message delivery, inbox placement, or application flows. Teams handling email and attachment data may also find the JSON extraction tool relevant.

Pick smtp4dev if…

smtp4dev is intended for developers and teams testing email, including production-like testing and CI/CD pipelines. It is particularly relevant when test messages need to be inspected without reaching real customers.