email-domain-validator

A lightweight TypeScript email validation library that verifies email format, validates top-level domains (TLDs), and provides frontend and backend validation utilities with consistent typed results.

Email Domain Validator is a TypeScript-first library for validating email addresses beyond simple regex checks. It verifies email syntax using industry-standard validation, checks domain and top-level domain (TLD) validity, and provides dedicated frontend and backend validation functions with strongly typed responses.

Features:

Features

• ✅ Email format validation
• ✅ Domain extraction and normalization
• ✅ Top-level domain (TLD) verification
• ✅ Frontend validation utilities
• ✅ Backend validation utilities
• ✅ TypeScript support with typed validation results
• ✅ Lightweight and easy to integrate

Ideal for user registration forms, authentication systems, newsletters, SaaS platforms, and applications that require reliable email validation before account creation.

email-domain-validator

Validate email addresses, domains, and TLDs in TypeScript applications.

Installation

npm install email-domain-validator

Usage

import { validateEmailBackend } from "email-domain-validator";

const result = await validateEmailBackend("[email protected]");

    const emailValidation = await validateEmailBackend(user.email);
         if (!emailValidation.valid) {
        return ErrorHandler.handle400xError(
          new Error(emailValidation.reason)
        );
      }