Email Validator by Sidemail

What it does

Free, fast, no-login email validity checker. Paste an email address, and we’ll check syntax, domain & MX records, flag disposable providers and typos, and optionally run a safe SMTP deep check without sending email. You can copy the results and validate more addresses in seconds.

Free email validator. Paste an email address to check syntax, DNS/MX, disposable, typos, and optionally do deep SMTP handshake. Fast, accurate, online.

Free, fast, no-login email validity checker. Paste an email address and we’ll check syntax, domain & MX records, flag disposable providers and typos, and optionally run a safe SMTP deep check without sending email. You can copy the results and validate more addresses in seconds. Want to verify a whole list? Try our Email list validation tool . Integrate real-time email validation directly into your application. Validate email addresses during user signup, before importing lists, or at any point where low-quality email data might enter your system. API access requires a Sidemail account and a project API key. Sending emails can be a hassle. We make it easy and fast. Join us to reliably send…from sidemail.io

In the maker’s words, at launch

Hi HN – Kristyna here. I built this free, online email validator and would love to share it with you. What it checks: - Syntax – Confirms correct proper email format. - Domain & DNS – Verifies the domain exists and resolves. - MX records – Verifies the domain can receive mail. - SMTP handshake (optional) – Checks the…

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