MailSentry Documentation
Learn how to verify email addresses, understand results, and integrate with your favorite tools.
Quick start
Why verify emails?→
Learn why email verification matters and how it protects your sender reputation.
Quick start→
Validate your first email in under a minute. Copy a snippet, paste your key, done.
Understanding results→
Learn what each result code means and how to act on scores and verdicts.
All 11 validation layers→
A deep look at every check MailSentry runs — and what each one catches.
Quality scores & verdicts→
How the 0-100 score is calculated, what each verdict means, and recommended actions.
Sandbox mode→
Test your integration with deterministic mock responses — zero credits used.
Email verification
Disposable emails→
Why temporary mailboxes are dangerous and how we detect them.
Catch-all domains→
What happens when a server accepts everything — and why it's risky.
Role-based addresses→
Why info@, support@, and noreply@ are different from personal emails.
Spam traps→
Hidden honeypot addresses that can destroy your sender reputation.
SMTP verification→
How we talk directly to the mail server to confirm a mailbox exists.
All topics
Getting Started
Email Verification
Using MailSentry
Ready to start?
Create a free account and validate your first email in under a minute.
Start Free →