https://mailerio.com/
Dec 11, 2025 - Email validation tool to check and verify emails instantly. Real-time API, bulk upload, and smart reporting for better deliverability.
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https://haveibeenpwned.uservoice.com/forums/275398-general/suggestions/50930423-fix-email-address-validation
I operate my own mail server. I routinely create an email alias for a site when the site asks for my address. This enables me to disable an address that is...
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https://postcoder.com/
Postcoder is the API for address lookup & form validation. Improve your conversion rates and capture better quality customer data.
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https://www.mailboxvalidator.com/
MailboxValidator email validation clean email lists and reduces bounce. It connects to the mail server and checks whether the mailbox exists or not.
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https://www.mailersend.com/features/email-verification-tool
Improve email deliverability with MailerSend's email address validation tool. Validate email addresses via the API or the interface and keep a clean email list.
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