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Install Mailpit using Winget - wingetCollections
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Mailpit Ralph Slooten

email-testing go golang mailpit pop3-server smtp-relay smtp-server smtp-testing
Use this command to install Mailpit:
winget install --id=axllent.mailpit -e

Mailpit is an email testing tool designed for developers to streamline the process of capturing, analyzing, and validating emails during development. It acts as an SMTP server, providing a modern web interface with advanced search capabilities and a REST API for integration testing. Key features include support for HTTPS, authentication, real-time updates via web sockets, and functionalities such as link checking, spam score evaluation, and screenshot generation of HTML messages.

Ideal for developers who need to test email functionality in their applications, Mailpit ensures efficient testing and early detection of issues. It helps improve email delivery rates, compatibility across email clients, and enhances overall user experience by validating links and assessing spam potential. Mailpit can be installed via winget, making it easy to integrate into your development workflow.

README

Mailpit - email testing for developers 

<a href="https://github.com/axllent/mailpit/releases/latest"><img src="https://img.shields.io/github/v/release/axllent/mailpit.svg" /></a>
<a href="https://hub.docker.com/r/axllent/mailpit"><img src="https://img.shields.io/docker/pulls/axllent/mailpit.svg" /></a>

Website • Documentation • API

Mailpit is a small, fast, low memory, zero-dependency, multi-platform email testing tool & API for developers.

It acts as an SMTP server, provides a modern web interface to view & test captured emails, and includes an API for automated integration testing.

Mailpit was originally inspired by MailHog which is no longer maintained and hasn't seen active development or security updates for a few years now.

Mailpit

Features

  • Runs entirely from a single static binary or multi-architecture Docker images
  • Modern web UI with advanced mail search to view emails (formatted HTML, highlighted HTML source, text, headers, raw source, and MIME attachments including image thumbnails), including optional HTTPS & authentication
  • SMTP server with optional STARTTLS or SSL/TLS, authentication (including an "accept any" mode)
Versions
1.29.5
Website
github.com
License
Last updated
3/31/2026
Download latest version
  • A REST API for integration testing
  • Real-time web UI updates using web sockets for new mail & optional browser notifications when new mail is received
  • Optional POP3 server to download captured message directly into your email client
  • HTML check to test & score mail client compatibility with HTML emails
  • Link check to test message links (HTML & text) & linked images
  • Spam check to test message "spamminess" using a running SpamAssassin server
  • Create screenshots of HTML messages via web UI
  • Mobile and tablet HTML preview toggle in desktop mode
  • Message tagging including manual tagging or automated tagging using filtering and "plus addressing"
  • SMTP relaying (message release) - relay messages via a different SMTP server including an optional allowlist of accepted recipients
  • SMTP forwarding - automatically forward messages via a different SMTP server to predefined email addresses
  • Fast message storing & processing - ingesting 200-300 emails per second over SMTP depending on CPU, network speed & email size, easily handling tens of thousands of emails, with automatic email pruning by volume or message age (by default keeping the most recent 500 emails)
  • Chaos feature to enable configurable SMTP errors to test application resilience
  • List-Unsubscribe syntax validation
  • Optional webhook for received messages

    • Installation

    The Mailpit web UI listens by default on http://0.0.0.0:8025 and the SMTP port on 0.0.0.0:1025.

    Mailpit runs as a single binary and can be installed in different ways:

    Install via package managers

    • Mac: brew install mailpit (to run automatically in the background: brew services start mailpit)
    • Arch Linux: available in the AUR as mailpit
    • FreeBSD: pkg install mailpit

    Install via script (Linux & Mac)

    Linux & Mac users can install it directly to /usr/local/bin/mailpit with:

    sudo sh &lt; &lt;(curl -sL https://raw.githubusercontent.com/axllent/mailpit/develop/install.sh)

    You can also change the install path to something else by setting the INSTALL_PATH environment, for example:

    sudo INSTALL_PATH=/usr/bin sh &lt; &lt;(curl -sL https://raw.githubusercontent.com/axllent/mailpit/develop/install.sh)

    Download static binary (Windows, Linux and Mac)

    Static binaries can always be found on the releases. The mailpit binary can be extracted and copied to your $PATH, or simply run as ./mailpit.

    Docker

    See Docker instructions for 386, amd64 & arm64 images.

    Compile from source

    To build Mailpit from source, see Building from source.

    Usage

    Run mailpit -h to see options. More information can be seen in the docs.

    If installed using homebrew, you may run brew services start mailpit to always run mailpit automatically.

    Testing Mailpit

    Please refer to the documentation on how to easily test email delivery to Mailpit.

    Configuring sendmail

    Mailpit's SMTP server (default on port 1025), so you will likely need to configure your sending application to deliver mail via that port. A common MTA (Mail Transfer Agent) that delivers system emails to an SMTP server is sendmail, used by many applications, including PHP. Mailpit can also act as substitute for sendmail. For instructions on how to set this up, please refer to the sendmail documentation.

    For team features, multiple inboxes, and a hosted setup, try Mailtrap, our friendly companion.