# Install mailauth with npm

Email authentication library for Node.js. Version 4.13.3 via npm; verified 2026-05-14.

## Install

```sh
sudo av install npm:mailauth
```

Additional install commands:

### Portable and language managers

- npm (100%):

```sh
npm install -g mailauth
```

  Evidence: local npm package metadata

## Package facts

- **Package key:** npm:mailauth
- **Package manager:** npm
- **Package manager page:** <https://www.npmjs.com/package/mailauth>
- **Version:** 4.13.3
- **Source summary:** Email authentication library for Node.js
- **Homepage:** <https://github.com/postalsys/mailauth>
- **Repository:** <https://github.com/postalsys/mailauth>
- **Upstream docs:** <https://github.com/postalsys/mailauth>
- **License:** MIT
- **Source archive:** <https://registry.npmjs.org/mailauth/-/mailauth-4.13.3.tgz>
- **Issue tracker:** <https://github.com/postalsys/mailauth/issues>
- **Published:** 2026-05-14T05:54:52.818Z
- **Last updated:** 2026-05-14T05:54:52.818Z
- **Generated:** 2026-08-04T22:13:35+00:00

## Executables

- mailauth (cli)
- mailauth (alias)

## Dependencies

- @postalsys/vmc
- fast-xml-parser
- ipaddr.js
- joi
- libmime
- nodemailer
- punycode.js
- tldts
- undici
- yargs

## Build dependencies

- chai
- eslint
- eslint-config-nodemailer
- eslint-config-prettier
- js-yaml
- license-report
- mbox-reader
- mocha
- prettier
- resedit

## Install behavior

- Post-install hook: not defined
- Bottle: not available

## Freshness

- Page generated: 2026-08-04
- Package-manager version: 4.13.3
- Package-manager updated: 2026-05-14
- Local data: ok
- Upstream repository: https://github.com/postalsys/mailauth
- info: No cached GitHub release or tag data was available.

## Security Notes

No matching local secret-handling manifest was found for mailauth. Package metadata is still published here so future coverage has a stable package URL.


## Source Database Details

- **Source Database:** npm registry
- **Dist Tags:** Dev: 1.0.0-dev.3, Latest: 4.13.3
- **Version Count:** 98
- **Maintainers:** andris
- **Author:** Postal Systems OÜ
- **Publisher:** GitHub Actions
- **Engines:** Node: >=20.18.1
- **Integrity:** sha512-OdusE4urklIQn4eIie7+B7KMenp5y98SCx97TaK+UmMgjwYmy3G+yihJ/b2GSRlOT5cdUqS4SZYhqByzGRbv+A==
- **Shasum:** 842037913a7d053357f0560ef994e255a43fdfde
- **Unpacked Size:** 569,523
- **File Count:** 0
- **Created At:** 2020-08-24T08:20:23.708Z
- **Latest Published At:** 2026-05-14T05:54:52.818Z
- **Modified At:** 2026-05-14T05:54:53.105Z


## Related links

- [Security and crypto packages](https://pkg.so/security-crypto-tools/) - Matched curated package taxonomy and local package facts.
- [auditjs](https://pkg.so/npm/auditjs/) - Both packages touch the same language runtime or ecosystem. Shared terms: cli, node, security, undici, yargs.
- [owasp-dependency-check](https://pkg.so/npm/owasp-dependency-check/) - Both packages touch the same language runtime or ecosystem. Shared terms: cli, node, node-js, security, undici.
- [saml-idp](https://pkg.so/npm/saml-idp/) - Both packages work with overlapping file formats or content types. Shared terms: cli, parser, security, xml, yargs.

## Sources

- pkg.so package database
- package-page enrichment
- package version freshness
- pkgdb category and tag curation
- package relationship graph
- cross-ecosystem install command graph