7 min read
How to verify an email address (without sending one)
How to verify an email address step by step: check syntax, look up MX records, ask the mail server over SMTP and test for catch-all, all without sending mail.
BounceOwl team
Guides for people who send email.
How verification really works, why lists still bounce, and what to do about catch-all domains. Written by the team that builds BounceOwl.
6 min read
What is a catch-all email, and should you send to one?
What a catch-all email domain is, why accept-all servers make verification unreliable, how a made-up address test detects them and how to send to them safely.
BounceOwl team
7 min read
Why do verified emails bounce? Six causes and how to fix them
Why verified emails still bounce: stale results, catch-all domains, security gateways, full mailboxes and greylisting, plus practical steps to cut bounces.
BounceOwl team
8 min read
Email verification API: how to verify emails in your code
How to verify emails with an API: where to call it, curl, Python and Node examples for POST /v1/verify, handling 402 and unknown results, and bulk jobs.
BounceOwl team
7 min read
Email list cleaning: a checklist to run before every campaign
Email list cleaning checklist: dedupe, remove bad syntax, verify live, split catch-all, unknown, role and disposable results, and know when to re-clean.
BounceOwl team