DQE email validation checks whether a submitted email address is technically valid and whether the domain and mailbox can be reliably assessed. It is available as a real-time API service.
What DQE checks
- Email address format and syntax
- Domain existence and DNS configuration (MX records)
- Mailbox-level indicators when available
- Risk and uncertainty signals depending on the domain policy
Correction suggestions
When DQE detects a likely typo in the domain (for example, gmal.com instead of gmail.com), it may return a correction suggestion alongside the validation result.
Why results vary by domain
Email validation depends on the information available at the time of the request. Some domains provide strong signals for reliable validation. Others apply restrictive policies that limit what can be verified — in these cases, DQE returns a conservative status rather than confirming an address that cannot be reliably assessed.
Supported use cases
- Real-time validation at point of capture (forms, CRM, checkout)
- Bulk validation via file-based batch processing