Stop accepting junk emails on your signup forms and mailing lists

Get Email Deliverability Verification

Give it a Test Drive

Postnix tells you if emails are actually deliverable - not just formatted correctly.



FILTER THE JUNK

Undeliverable emails like [email protected] are lurking in your database, hurting your deliverability score and increasing your bounce rate.

INSTANT VERIFICATION

Use our real-time email verification API in your signup process and get instant feedback on the true deliverability of your user's email addresses.

PROVIDER LOOKUP

We lookup DNS records to reveal who the email provider is. This means we can detect the use of Gmail and others — even for custom domains.

BATCH PROCESS

(Coming soon!)
Use our batch process email verification tool to perform email verification checks on all your existing emails at once.



KISS BAD EMAIL ADDRESSES GOODBYE. FOREVER.

Scrub your entire existing database with our batch tools, and ensure no more bad emails get in your database ever again by integrating our lightning-fast instant email verification API in your signup form.

Register Now

All new accounts come with 500 free credits so you can try Postnix with no commitment.