Deep Email Validator
Validates regex, typos, disposable, dns and smtp. Contribute to mfbx9da4/deep-email-validator development by creating an account on GitHub.
Deep Email Validator launched on December 16, 2020 with 51 votes, #859 of 3,242 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 5 years on.
In plain words
Deep Email Validator is an email verification tool launched in December 2020. It checks the validity and deliverability of email addresses for developers and businesses that need to maintain clean mailing lists. The tool performs thorough validation checks rather than basic format verification, making it useful for anyone managing email databases or integrations. It's available as open-source code on GitHub.
written from the facts on this page · September 2026
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Email Validator by SidemailFeb 2026 · sidemail.io · ▲16Hi 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 mail server accepts the recipient (no message is sent). - Disposable domains – Flags temporary inbox providers that can hurt deliverability lists. - Common typos – Catches mistakes and suggests fixes. How it works: Paste an email > click Validate > get a clear result with…
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Source: Show HN post ↗
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