Email verification
9 articles on email verification.
What is email verification and how does it work?
A plain-English explanation of email verification — the checks it runs, the statuses it returns, and why it matters.
How to verify an email address without sending one
Yes, you can confirm an address is likely deliverable without emailing it. Here's how verification does it.
Catch-all emails: why most verifiers get them wrong
What a catch-all domain is, why it's hard to verify, and how to handle catch-all addresses safely.
Disposable emails: how to detect and block them
Why throwaway addresses hurt your list and how to keep them out at signup and before you send.
How to clean an email list before your next campaign
A simple, repeatable process to verify, dedupe and prune a list so your next send actually reaches the inbox.
Real-time vs bulk email verification: which do you need?
When to verify at the point of capture versus cleaning a whole list at once — and why most teams use both.
How accurate is email verification, really?
What email verification can and can't tell you for certain — and why catch-all and unknown results exist.
Spam traps: what they are and how to avoid them
The addresses that exist only to catch careless senders — and the list practices that keep you clear of them.
How to reduce fake signups on your forms
Bots and throwaway addresses pollute your CRM at the form. Here's how to stop them before they become records.