smtp4dev Alternatives

Apps similar to smtp4dev include Mailcatch.app, which has a free version. Other options are FakeSMTP, Mailtrap, MailMug.net and Papercut. You can choose from more than 10 Mail Servers like smtp4dev for the web, Windows, Linux, Mac and self-hosting.

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smtp4dev alternatives page was last updated Jul 10, 2026

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 smtp4dev?
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 smtp4dev?
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 smtp4dev?
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 smtp4dev?
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 smtp4dev?
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 smtp4dev?
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 smtp4dev?
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 smtp4dev?
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 smtp4dev?