ToolsEmail deliverability
Email deliverability
checker.
Enter a domain to grade its email authentication. Gmail and Yahoo now require SPF, DKIM and DMARC for bulk senders, and a gap in any one of them sends cold email to spam.
What it checks
- MX: can the domain receive replies
- SPF: one record, a strict ending, under the 10 lookup limit
- DMARC: present, and enforced rather than monitor only
- DKIM: a signing key on the common selectors
Runs in your browser using public DNS. We do not store what you check.
Your results will appear here.