LunaticSMTP Alternatives

LunaticSMTP is described as 'Dummy SMTP server with desktop GUI for testing email sending applications' and is an app in the development category. There are more than 10 alternatives to LunaticSMTP for a variety of platforms, including Web-based, Windows, Linux, Mac and SaaS apps. The best LunaticSMTP alternative is Mailpit, which is both free and Open Source. Other great apps like LunaticSMTP are MailHog, Mailtrap, MailMug.net and FakeSMTP.

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Get a badge for your siteLunaticSMTP alternatives page was last updated Jul 10, 2026

MailDev
1 like
MailDev is a simple way to test your project's generated emails during development with an easy to use web interface that runs on your machine built on top of Node.js.
Cost / License
Free
Open Source (MIT)
Platforms
Mac
Windows
Linux
BSD
Self-Hosted
Docker
Good alternative?Is MailDev a good alternative to LunaticSMTP?
Mailocal
1 like
A local SMTP server with email display, used mostly for development of other apps. Think unlimited Mailtrap that runs on your own computer.
Cost / License
Free
Open Source (MIT)
Origin
France
EU
Platforms
Self-Hosted
France
EU
Good alternative?Is Mailocal a good alternative to LunaticSMTP?
Zyntra
1 like
Zyntra is a disposable email platform for QA teams and test automation workflows.
Cost / License
Freemium
Proprietary
Application type
Automated Testing
Origin
Ukraine
Platforms
Online
Software as a Service (SaaS)
Ukraine
+3
Good alternative?Is Zyntra a good alternative to LunaticSMTP?
Mailsnag
Like
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.
Cost / License
Freemium
Proprietary
Application typeApplication types
Mail Server
Automated Testing
Origin
United States
Platforms
Online
United States
+1
Good alternative?Is Mailsnag a good alternative to LunaticSMTP?
DevMail
Like
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.
Cost / License
Paid
Proprietary
Application type
Mail Server
Origin
United Kingdom
Platforms
Online
United Kingdom
Good alternative?Is DevMail a good alternative to LunaticSMTP?
MailFixture
Like
Disposable email inboxes via API for testing signup and authentication flows, with automatic extraction of one-time passwords and magic links.
Cost / License
Freemium
Proprietary
Application type
Automated Testing
Platforms
Online
Software as a Service (SaaS)
Good alternative?Is MailFixture a good alternative to LunaticSMTP?
Imitate Email
1 like
Imitate Email is a fake SMTP server for developers and testers. It includes an embeddable widget so that testers can quickly see sent emails alongside the app they're testing.
Cost / License
Paid
Proprietary
Origin
United Kingdom
Platforms
Online
United Kingdom
Good alternative?Is Imitate Email a good alternative to LunaticSMTP?
Mailnest
Like
Mailnest is an all in one email QA tool for development & testing teams in IT companies to test & improve email functionality.
Cost / License
Paid
Proprietary
Origin
United Kingdom
Platforms
Software as a Service (SaaS)
United Kingdom
+1
Good alternative?Is Mailnest a good alternative to LunaticSMTP?
MailSpons
1 like
Fake SMTP server for safe email testing. Stop accidentally spamming your customers.
Cost / License
Free
Proprietary
Application type
Mail Server
Platforms
Online
Software as a Service (SaaS)
Good alternative?Is MailSpons a good alternative to LunaticSMTP?
S
S
SMTP Bucket
Like
A fake SMTP server for e-mail integration testing. We capture all the e-mails we receive and make them available via our website and REST API.
Cost / License
Free
Proprietary
Origin
United States
Platforms
Online
S
Good alternative?Is SMTP Bucket a good alternative to LunaticSMTP?
fakemail.stream
Like
A fake SMTP server for software integration testing.
Cost / License
Free
Open Source (AGPL-3.0)
Application type
Mail Server
Platforms
Online
Good alternative?Is fakemail.stream a good alternative to LunaticSMTP?