About Email Verifier
This tool verifies email addresses using a layered approach that balances accuracy, speed, and real-world deliverability constraints. It is designed to work reliably across devices, avoid false promises, and behave in line with how modern mail servers actually function.
The tool provides structured results instead of a simple true or false, making it suitable for signup forms, lead validation, internal quality checks, and API-based workflows.
Found a bug? Raise a bug here!
Email Verifier
What the Tool Does
The verifier checks an email address in the following order:
- Email format validation
- Disposable email detection
- Domain MX record validation
- SMTP mailbox probing
- Catch-all domain detection
- Result classification and logging
Each verification is logged for quality analysis.
What the Tool Does Not Do
- It does not guarantee that an inbox is actively monitored
- It does not send real emails
- It does not wait for bounce responses
- It does not claim 100 percent accuracy
These limitations are intentional and aligned with modern email infrastructure.
Result Classification
Instead of returning a simple true or false, the tool returns two fields:
Status
- valid
The domain accepts mail for this address - invalid
The domain or server explicitly rejects the address
SMTP Result
- valid
Server accepted the mailbox - invalid
Server explicitly rejected the mailbox - catch_all
Domain accepts all addresses, mailbox cannot be confirmed - unknown
Server blocked or deferred the probe
FAQs
Q1: Why does a fake-looking email return valid?
A: Because the domain accepts mail for all addresses. SMTP acceptance does not guarantee mailbox existence.
Q2: Why doesn’t the tool just reject catch-all domains?
A: Because many legitimate businesses use catch-all configurations. Rejecting them causes false negatives.
Q3: Can this tool replace confirmation emails?
A: No. Confirmation emails are still the only definitive proof of inbox ownership.
