Check MX records, SPF, DKIM, DMARC configuration, and validate email addresses. Ensure your emails reach the inbox.
Look up MX (Mail Exchange) records for any domain. See which mail servers handle email for a domain.
Verify SPF (Sender Policy Framework) records. Ensure your domain is protected against email spoofing.
Check if a domain or IP is blacklisted. Identify deliverability issues caused by being on spam lists.
Validate email address format and check if the domain has valid MX records. Basic email verification.