multiform-validator
Javascript library made to validate, several form fields, such as: email, images, phone, password, cpf etc.
verifymailjs
A robust and modern JavaScript library for validating and categorizing email addresses. You can check if an email address is valid, disposable, role-based, free, or from a temporary email provider.
saksh-email-validator
A comprehensive email validation module with syntax, domain, blacklist, and SMTP checks.