---
title: "MailDev SMTP Testing Server and Web Interface for Development Email Workflows"
description: "MailDev is a local SMTP server with a browser UI for viewing test emails during development. It catches outgoing mail, exposes a REST API, supports attachments and relay options, and helps teams test email flows without sending real messages to customers."
verification: "security_reviewed"
source: "https://github.com/maildev/maildev"
category:
  - "Calendar, Email & Productivity"
framework:
  - "Multi-Framework"
tool_ecosystem:
  github_repo: "maildev/maildev"
  github_stars: 5889
---

# MailDev SMTP Testing Server and Web Interface for Development Email Workflows

MailDev is a local SMTP server with a browser UI for viewing test emails during development. It catches outgoing mail, exposes a REST API, supports attachments and relay options, and helps teams test email flows without sending real messages to customers.

## Installation

Choose whichever fits your setup:

1. Copy this skill folder into your local skills directory.
2. Clone the repo and symlink or copy the skill into your agent workspace.
3. Add the repo as a git submodule if you manage shared skills centrally.
4. Install it through your internal provisioning or packaging workflow.
5. Download the folder directly from GitHub and place it in your skills collection.

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/maildev-smtp-testing-server-and-web-interface-for-development-email-workflows/)