▤ TEXT TOOLS Updated July 25, 2026

Email Address Validator

Clean a messy address list before you import or send.

Email addresses
Validation result
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How it works

Addresses are split on spaces, commas and semicolons, tested against the standard local-part@domain.tld pattern, then de-duplicated case-insensitively so each address appears once.

Related tools

◈Case Converter◑Character Counter◐Remove Duplicate Lines

Frequently asked questions

Does it check if the mailbox exists?

No. This is a syntax and duplicate check that runs offline; delivery can only be confirmed by sending.

Are addresses uploaded?

No. Everything is processed in your browser.

Comments

Comments aren't enabled yet. When you're ready, this is where a service like Giscus, Disqus, or a custom form would go — the slot is already reserved on every tool page.