# nodemailer/nodemailer

✉️ Send e-mails with Node.JS – easy as cake!

Repository: https://github.com/nodemailer/nodemailer
Canonical: https://ross.abutalabs.com/products/nodemailer
Homepage: http://nodemailer.com/
Language: JavaScript
License: NOASSERTION
License Family: other
Topics: nodemailer, email, email-sender, rfc822
Last push: 2026-08-12T07:26:04+00:00

## Health v2 (maintenance only)
Score: 97/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 97, release rhythm 96, longevity 100
- inputs: {"age_days": 5705, "days_push": 21, "days_rel": 26, "gap_med": 12, "n_releases_24m": 36}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 17659, forks 1431 (observed 2026-08-28T04:11:20.139377+00:00)

## What it is
Nodemailer is the most popular email sending library for Node.js, supporting SMTP, Sendmail, Amazon SES, and custom transports. It handles MIME construction, attachments, HTML/plain-text multipart messages, TLS/STARTTLS, DKIM signing, and OAuth2 authentication with zero runtime dependencies.

## Use cases
- send emails from node.js
- send transactional email via smtp
- send html email with attachments in node
- sign outgoing email with dkim
- send email through amazon ses from node
- send email with oauth2 gmail authentication
- test email sending locally

## When to choose
- you need to send email from a Node.js application or server
- you want a dependency-free, well-maintained email library with SMTP, SES, and Sendmail support
- you need DKIM signing, OAuth2, or proxy support for enterprise email delivery

## When to avoid
- you need to receive or read incoming email rather than send it
- you are not using Node.js
- you want a full hosted email API service rather than a library

## Facets
- artifact type: library
- maturity: stable
- function: email
- domain: email, backend
- platform: -
- tags: smtp, dkim, oauth2, attachments, transactional-email, nodejs

## Member repositories
- nodemailer/nodemailer (main) score 97

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:20.139377+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 2026-08-29T17:02:32.051580+00:00, confidence not recorded.
  - readme: https://github.com/nodemailer/nodemailer (fetched 2026-08-28T04:11:20.139377+00:00, sha 449bf5a2f101)
  - homepage: http://nodemailer.com/ (fetched 2026-08-29T08:01:03.425791+00:00, sha bdb150debbf1)
  - site_page: http://nodemailer.com/plugins/create (fetched 2026-08-29T08:01:03.429719+00:00, sha f360e0f612f7)
- Data as of 2026-08-30T08:39:29.467469+00:00.