# mailslurper/mailslurper

Local, web-based mail server application. Slurp mails into oblivion!

Repository: https://github.com/mailslurper/mailslurper
Canonical: https://ross.abutalabs.com/products/mailslurper
Language: JavaScript
License: MIT
License Family: permissive
Topics: javascript, go, mailslurper, bootstrap, mail, mailserver, development-tools, smtp, smtp-server
Last push: 2025-12-05T02:32:11+00:00

## Health v2 (maintenance only)
Score: 48/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 55, release rhythm 8, longevity 100
- inputs: {"age_days": 4305, "days_push": 272, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1510, forks 194 (observed 2026-08-28T04:04:55.818018+00:00)

## What it is
MailSlurper is a lightweight, web-based SMTP mail server written in Go that captures emails sent by applications during development. It stores messages in a database and provides a web UI for viewing them, letting developers test email functionality without a real mail server.

## Use cases
- test email sending in local development
- capture emails from my app without a real SMTP server
- view emails sent during automated tests
- run a fake SMTP server with Docker
- inspect outgoing mail from a small dev team

## When to choose
- you need a simple local SMTP sink with a web UI for development or testing
- you want a Docker-friendly mail catcher for individual developers or small teams

## When to avoid
- you need a production mail server with real delivery, relaying, or spam filtering
- you require enterprise features like high availability or large-scale mail routing

## Facets
- artifact type: application
- maturity: active
- function: email, http-server, web-framework, developer-tools
- domain: developer-tools, email, testing, self-hosted
- platform: windows, self-hosted, go
- tags: smtp-server, fake-mail-server, email-testing, mail-catcher, local-development, linux, macos, docker

## Member repositories
- mailslurper/mailslurper (main) score 48

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:55.818018+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:32:26.851192+00:00, confidence not recorded.
  - readme: https://github.com/mailslurper/mailslurper (fetched 2026-08-28T04:04:55.818018+00:00, sha b89e19793ba0)
- Data as of 2026-08-30T08:39:29.467469+00:00.