Email List Validator
Paste or upload an email list to check syntax, flag duplicates and disposable domains, and catch common domain typos — then export a clean CSV. Your list never leaves your browser.
What it checks: RFC 5322 syntax, local-part and domain length limits, missing TLD, duplicates (case-insensitive), known disposable domains, and common domain typos (gmial.com → gmail.com).
Syntax validation does not confirm a mailbox exists — that requires SMTP probing, which can't be done client-side. This tool catches the data-quality issues that break CRM imports and hurt sender reputation before you send.