MailHog alternative: InboxRhino vs MailHog and Mailpit
Looking for a MailHog alternative? MailHog and Mailpit are local SMTP catchers. They are the right tool when the application can send to localhost on a developer machine. They are the wrong tool when staging sends through a real provider to a real address, or when CI has no sidecar. InboxRhino is a hosted receive-only MX inbox for that second case. Confirm current Mailpit behaviour on mailpit.axllent.org. MailHog is unmaintained; Mailpit is the maintained replacement with the same default ports.
Who each product fits
Use Mailpit on a laptop when you can point the app at SMTP localhost:1025, inspect messages in the local UI, and optionally query the local REST API. You can run the same container in GitHub Actions, but then the application must still send to that container, not to Amazon SES or Postmark.
Use InboxRhino when the product under test already sends real mail. Create an address, wait up to 180 seconds, read the HTML in a sandboxed viewer, then delete the inbox. That path is the same in CI as on a laptop. InboxRhino does not replace Mailpit for purely local SMTP capture, and it does not send mail.
| Capability | InboxRhino | MailHog / Mailpit |
|---|---|---|
| Real public MX | Yes, addresses on test.inboxrhino.in | No. Local SMTP on port 1025 |
| How mail arrives | Your real mailer (SES, Postmark, app SMTP) delivers to the test address | The app under test must send to localhost, not a public provider |
| GitHub Actions / CI | Same wait-for-message call as on a laptop | Works only if you run a Mailpit service container and rewrite SMTP |
| Wait-for-message API | Yes, up to 180s with subject/sender filters | Mailpit REST API on localhost:8025; MailHog API is unmaintained |
| Visual HTML inbox | Sandboxed console on the web | Local UI on port 8025 |
| Cost | Free tier live: 11 inboxes / 33 emails | Free, self-hosted |
| Maintenance | Hosted by InboxRhino | MailHog last released 2020; Mailpit is the drop-in replacement |
| SMS / SDKs | Not in v1 | Not applicable |
Compared on 7 September 2026 from InboxRhino's live product, Mailpit's public docs, and MailHog's GitHub status. Local-catcher behaviour can change with your Docker setup. InboxRhino paid checkout is not live.
See Playwright email testing, the API quickstart, InboxRhino vs Tigrmail, and Mailosaur alternative, InboxRhino vs MailSlurp, and InboxRhino vs testmail.app.