Email Spell Checker

📮 An ultratiny (1.9 KB) and fast JavaScript email checker to reduce users typing a wrong email. Written in TypeScript. Enterprise-grade.

Digital Marketing & SEOTypeScriptMIT

Abstract

Email Spell Checker is an open-source Digital Marketing & SEO project. 📮 An ultratiny (1.9 KB) and fast JavaScript email checker to reduce users typing a wrong email. Written in TypeScript. Enterprise-grade. The best way to check a misspelled email address in JavaScript. It is built using TypeScript. Key capabilities include: Lightning fast: Highly performant email checking using Sift3 - a fast and accurate string distance algorithm; Updated: 39+ popular domains, and 66+ modern TLDs out-of-the-box. Frequently updated; Ridiculously small: 1.8KB (minzip) and 0 external dependencies. We agree, big bundles suck!. The complete source code is publicly available on GitHub under the MIT License, making it a useful reference for students building a Digital Marketing & SEO mini project or final-year project.

1. Introduction

The best way to check a misspelled email address in JavaScript

Reduce failed authentication      ⬆ Increase email delivery      Built for speed

[![npm package][npm-img]][npm-url] [![npm package][bundlephobia-img]][bundlephobia-url] [![Issues][issues-img]][issues-url] [![Commitizen Friendly][commitizen-img]][commitizen-url]

2. Objective

📮 An ultratiny (1.9 KB) and fast JavaScript email checker to reduce users typing a wrong email. Written in TypeScript. Enterprise-grade.

This project demonstrates how TypeScript can be applied to a real-world Digital Marketing & SEO problem.

3. Key Features / Modules

  • Lightning fast: Highly performant email checking using Sift3 - a fast and accurate string distance algorithm.
  • Updated: 39+ popular domains, and 66+ modern TLDs out-of-the-box. Frequently updated.
  • Ridiculously small: 1.8KB (minzip) and 0 external dependencies. We agree, big bundles suck!
  • TypeScript: Fully written in TypeScript, cause we know you love it and we too.
  • Extensible: Allows you to pass your custom rules and domains. Tweak it as you need.
  • 1-minute migration: Same API and functions as mailcheck so you can switch in a sec!
  • Unit tested: Cause we'd never use a library without tests :).

4. Technology Stack

TypeScript

5. System Requirements

General requirements for this technology stack — check the README for exact versions.

  • Node.js (LTS) and npm / yarn / pnpm
  • VS Code or any code editor
  • Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/smashsend/email-spell-checker.git
cd email-spell-checker
npm i @zootools/email-spell-checker --save
yarn add @zootools/email-spell-checker

Full setup instructions are in the project README.

7. Future Enhancements

Suggested extensions you can add to make this your own project.

  • Export reports to Google Sheets or PDF
  • Schedule weekly automated reports
  • Add competitor comparison

8. Viva / Review Questions

Common questions examiners ask for projects in this domain.

  1. Which marketing or SEO problem does this tool solve?
  2. Which data sources or APIs does it use (Search Console, Analytics, social platforms)?
  3. Which metrics or KPIs does it report and how are they calculated?
  4. How could the output help a business make decisions?
  5. How would you schedule it to run automatically?

9. Source Code & License

This project is developed by smashsend and published on GitHub under the MIT License. Please follow the license terms and credit the original author when you use or modify this code.

View Source on GitHubDownload ZIP

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