Demandbase uses a multi-step process to validate email addresses for people records.
Validation Rules
Email validation includes the following checks:
- Syntax check: Identifies formatting errors based on IETF standards, such as missing “@” or domain extensions.
- Domain and MX record check: Confirms the domain exists and has a valid mail exchanger (MX) record.
- Role-based account detection: Flags alias addresses such as postmaster@, info@, sales@, and admin@.
- Disposable email detection: Identifies temporary or throwaway addresses, including services like E4ward and 10minutemail.
- Honeypot and spam trap detection: Checks against known lists of spam traps, bots, and blacklisted emails or domains.
- DNSBL and URI DNSBL check: Flags domains associated with spam-related blocklists.
- SMTP verification: Confirms the email address by pinging the mail server without sending a message.
Email Confidence Indicators
Email confidence indicators reflect how likely an email is deliverable based on validation results.
- Valid email (green dot): The email address is verified.
- Valid domain (gray dot): The domain is valid, but the email address is not verified.