Email Checker
Check one email address for valid format, domain mail records, disposable email services, role inboxes, typo risk, and deliverability warnings.
Start Here
Enter an email address and run Email Checker.
Review the Email Checker Result
Review the status, warnings, and recommended actions shown in the result panel.
Ready When You Are
Run Email Checker to see the Email Checker result and next actions.
About Email Checker
An email address can look normal and still be risky. The email checker looks at the address itself, the domain after the @ sign, and common list-quality signals that often lead to bounces or weak engagement. It is most useful before manually adding a subscriber, checking a signup issue, or reviewing an address that looks suspicious. For a broader cleanup process, read Protect List Quality.
The email checker does not send a test email and does not prove that a private mailbox definitely exists. Instead, it explains whether the address is shaped correctly, whether the domain appears able to receive mail, whether the address may be disposable or role-based, and what to do next. If the result mentions bounces, use the Bounces guide to understand why bad addresses can damage future sending.
What Email Checker Checks
- Email format and length
- Domain spelling and typo suggestions
- Mail server records for the domain
- Disposable or temporary email domains
- Role-based inboxes such as info@ or support@
- Free mailbox services and risk notes
Questions
Can this prove a mailbox exists?
No browser-based email checker can reliably prove that a mailbox exists without contacting the receiving mail server. The email checker reviews the address format, domain, mail records, and common risk signals, then explains what still needs human review or confirmation from the receiving mail server.
Does Mailrith store checked email addresses?
No. The email checker runs in the browser and does not save the address to Mailrith.