Email test
Send one email to a temporary address. See how your SPF, DKIM and DMARC are set up, how your sending server looks, and what to fix.
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Free checks left: 5 of 5. Signed-in users have a higher limit.
What the report covers
Authentication
SPF, DKIM and DMARC results for this very email, and whether they match your From domain
Sending server
Reverse DNS, the name it greets with, and blocklists when a key is set
Your domain's DNS
SPF record, lookups count, DMARC, MX, MTA-STS, TLS-RPT
Format and content
Required headers, text and HTML versions, size, subject, risky links and attachments
Large providers' rules
What Gmail, Yahoo and Outlook publish as requirements, and whether this email meets them
What to fix
A list by importance, with DNS records to add where they can be worked out
This shows how well this email is set up. It can't promise that any email reaches the inbox, because each provider also weighs your history with its users.