# truemail-rb/truemail

🚀 Configurable framework agnostic plain Ruby 📨 email validator/verifier. Verify email via Regex, DNS, SMTP and even more. Be sure that email address valid and exists.

Repository: https://github.com/truemail-rb/truemail
Canonical: https://ross.abutalabs.com/products/truemail
Homepage: https://truemail-rb.org/truemail-gem
Language: Ruby
License: MIT
License Family: permissive
Topics: ruby, ruby-gem, email, email-validation, email-verification, regex-validation, email-validator, smtp-validator, truemail, dns-validation, dns-validator, smtp-validation, mx-validation, truemail-gem, truemail-family, email-verifier, truemail-rb, hacktoberfest, validation, dns
Last push: 2024-04-23T08:59:17+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 2739, "days_push": 862, "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 1274, forks 71 (observed 2026-08-28T04:04:12.286207+00:00)

## What it is
Truemail is a configurable, framework-agnostic plain Ruby gem for validating and verifying email addresses. It validates emails via regex, DNS/MX lookups, SMTP checks, and whitelist/blacklist rules to confirm an address is both valid and exists.

## Use cases
- validate email addresses in a Ruby on Rails signup form
- check whether an email address actually exists via SMTP
- verify MX records for a user's email domain
- block disposable or blacklisted email domains at registration
- validate email format with a custom regex pattern
- clean up email lists before sending campaigns

## When to choose
- you need deep email verification beyond simple format checks (DNS, MX, SMTP)
- you want a framework-agnostic Ruby library with configurable validation layers
- you need whitelist/blacklist and MX blacklist controls

## When to avoid
- you are not working in Ruby
- you only need lightweight client-side email format checking
- you need a hosted bulk email verification API with deliverability scoring

## Facets
- artifact type: library
- maturity: stable
- function: email, form-handling, security
- domain: email, web-development, developer-tools
- platform: ruby
- tags: email-validation, email-verification, smtp-validation, dns-validation, mx-validation, regex-validation, ruby-gem, framework-agnostic

## Member repositories
- truemail-rb/truemail (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:12.286207+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 2026-08-30T05:03:09.497961+00:00, confidence not recorded.
  - readme: https://github.com/truemail-rb/truemail (fetched 2026-08-28T04:04:12.286207+00:00, sha a1b89663cbad)
  - homepage: https://truemail-rb.org/truemail-gem (fetched 2026-08-29T12:14:17.077092+00:00, sha b0b4ef57304d)
- Data as of 2026-08-30T08:39:29.467469+00:00.