Syntax & Deliverability Audit

Email Address Validator

Verify email address formatting syntax against international RFC 5321 standards, test domain DNS records, and inspect MX routing.

How the Email Validation Engine Works

1. RFC 5321 Syntax Audit:

Inspects local-part and domain-part character sets, preventing illegal characters, consecutive dots, or missing @ symbols.

2. DNS TLD Verification:

Validates that the root top-level domain zone exists and is actively registered with ICANN root name servers.

3. Mail Exchange (MX) Lookup:

Verifies whether authoritative mail exchange servers are configured to accept incoming SMTP connections.

4. Disposable Domain Check:

Cross-references the domain against our database of 120+ known temporary burner mailbox services.