Top 12 Open-Source Alternatives to testmail.app

Product categories

API API Management API Tools APIs Backend As A Service Developer Tools Disposable Email Email Email Testing Office Suites Tool Web Frameworks

Summary

The top open-source alternatives to testmail.app are Mailtrap, MailHog, and mailslurp. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Mailtrap Landing Page
1

Mailtrap

Email Delivery Platform that delivers just in time.  Great for businesses and individuals.
Pricing:
- Open Source
- Freemium
#Office Suites #Email #Email Testing 50 social mentions
MailHog Landing Page
2

MailHog

MailHog is an email testing tool inspired by MailCatcher, but easier to install.
Pricing:
- Open Source
#Email #Office Suites #Email Testing
mailslurp Landing Page
3

mailslurp

Email and SMS testing and development platform for software engineers and QA testers
Pricing:
- Open Source
- Freemium
- Free Trial
#Email #Email Testing #SMS
MailCatcher Landing Page
4

MailCatcher

MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a...
Pricing:
- Open Source
#Office Suites #Email #Email Testing 12 social mentions
SmtpMan Landing Page
5

SmtpMan

Whether you are developer, QA, or PM, SmtpMan has the tools for you to help building simple email testings,and never send broken emails again.
Pricing:
- Open Source
- Freemium
- Free Trial
#Email Testing #Email Marketing #Email
SonarCloud Landing Page
6

SonarCloud

Enhance your workflow with continuous code quality, SonarCloud automatically analyzes and decorates pull requests on GitHub, Bitbucket, Azure DevOps and GitLab on major languages.
Pricing:
- Open Source
- Freemium
- Free Trial
- €10.0 / Monthly (100,000 Lines of Code)
#Developer Tools #DevOps Tools #SAST 12 social mentions
Tyk Landing Page
7

Tyk

Tyk is an open-source API gateway and API management platform.
Pricing:
- Open Source
#API Tools #APIs #API Management 12 social mentions
Vaadin Framework Landing Page
8

Vaadin Framework

Vaadin is a web application framework for Rich Internet Applications (RIA).
Pricing:
- Open Source
#Developer Tools #Web Frameworks #JavaScript Tools 33 social mentions
Webhook.site Landing Page
9

Webhook.site

Instantly generate a free, unique URL and email address to test, inspect, and automate (with a visual workflow editor and scripts) incoming HTTP requests and emails.
Pricing:
- Open Source
- Freemium
- $14.0 / Monthly
#Developer Tools #APIs #Sales Workflow 68 social mentions
Supabase Landing Page
10

Supabase

An open source Firebase alternative
Pricing:
- Open Source
#Developer Tools #Realtime Backend / API #Backend As A Service 428 social mentions
Roundcube Landing Page
11

Roundcube

Web-based IMAP email client
Pricing:
- Open Source
#Email #Email Clients #SMTP Server 16 social mentions
Guerrilla Mail Landing Page
12

Guerrilla Mail

Guerrilla Mail is a web-based app that provides a disposable and anonymous email address. Users of the service are not required to set up an account in order to send or receive emails.
Pricing:
- Open Source
#Disposable Email #Fake Email #Email Productivity 5 social mentions