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wtf is emailvalid?

bcomnes/emailvalid — explained in plain English

Analysis updated 2026-07-18 · repo last pushed 2024-10-31

Audience · developerComplexity · 2/5StaleSetup · easy

TL;DR

A lightweight library that checks whether a signup email is real, catching typos, disposable addresses, and optionally blocking free providers like Gmail.

Mindmap

mindmap
  root((emailvalid))
    What it does
      Validates email format
      Flags disposable emails
      Suggests typo fixes
      Blocks free providers
    Tech stack
      JavaScript
      Zero dependencies
    Use cases
      Enforce corporate signups
      Block fake accounts
      Reduce newsletter spam
    Audience
      Backend developers
      SaaS builders
      Vibe coders

Code map

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filefunction / class

Why would anyone build with this?

REASON 1

Block signups from disposable email services like 10minutemail to cut down on fake accounts.

REASON 2

Require corporate email domains for a B2B product by blocking free providers like Gmail.

REASON 3

Catch typo'd domains (like gmil.com) and suggest the likely correct address to the user.

REASON 4

Allow Gmail but block known temporary email services for a newsletter signup form.

What's in the stack?

JavaScriptNode.js

How it stacks up

bcomnes/emailvalid0verflowme/alarm-clock0verflowme/seclists
Language—CSS—
Last pushed2024-10-312022-10-032020-05-03
MaintenanceStaleDormantDormant
Setup difficultyeasyeasyeasy
Complexity2/52/51/5
Audiencedevelopervibe coderops devops

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · easy Time to first run · 5min
No license information was mentioned in the explanation.

Yoink these prompts

Prompt 1
Show me how to install emailvalid and call .check() on a signup email in my Node.js app.
Prompt 2
Help me configure emailvalid to block all free email providers except a custom whitelist of domains.
Prompt 3
Write code using emailvalid to reject disposable email addresses during user registration.
Prompt 4
Use emailvalid to detect a typo'd email domain and suggest the correct one to the user before they submit.

Frequently asked questions

wtf is emailvalid?

A lightweight library that checks whether a signup email is real, catching typos, disposable addresses, and optionally blocking free providers like Gmail.

Is emailvalid actively maintained?

Stale — no commits in 1-2 years (last push 2024-10-31).

What license does emailvalid use?

No license information was mentioned in the explanation.

How hard is emailvalid to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is emailvalid for?

Mainly developer.

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