Native macOS SMTP email testing with HTML previews, quality checks, multiple mailboxes, a Mailpit-compatible API, and MCP.
Cost / License
- Freemium
- Proprietary
Platforms
- Mac
United States




MailHog has been discontinued. Similar apps include Postfix, which is free and open source. Other options are Mailpit, Gmailnator (Emailnator), Mailcatch.app and txen.de. Mail Servers like MailHog are a crowded field, with more than 25 alternatives for the web, Mac, Linux, Windows and self-hosting.
Native macOS SMTP email testing with HTML previews, quality checks, multiple mailboxes, a Mailpit-compatible API, and MCP.




Mailsnag lets you build resilient SMTP integrations while protecting you from spamming customers during testing on QA and Staging environments. It is like Chaos Monkey for SMTP integrations.








A lightweight SMTP server written in Go, made for receiving large volumes of mail. To be used as a package in your Go project, or as a stand-alone daemon by running the "guerrillad" binary.
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DevMail is an email sandbox service for software developers. It allows developers to capture emails from various environments and inspect HTML, text, source code, raw headers, and attachments, and improve deliverability by analyzing email spam scores.

Mailnest is an all in one email QA tool for development & testing teams in IT companies to test & improve email functionality.



