Email deliverability check
Check your domain’s email authentication records. The report shows missing or incorrect records and the changes needed to fix them.
What we check
SPF
Lists the servers allowed to send email as you. We check it exists, covers your mail host and stays under the 10-lookup limit.
DKIM
Signs each message so receivers can tell it wasn’t changed. We look for keys under the names mail hosts and sending services use.
DMARC
Tells receivers what to do with mail that fails SPF and DKIM, and sends you reports. We check the policy and where reports go.
Why it matters now. Since 2024, Gmail and Yahoo have required SPF, DKIM and DMARC from bulk senders, and Outlook.com followed in 2025.
What this check can’t tell you
Whether a message lands in spam
Content, your sending history and each recipient’s settings matter too.
Every DKIM key you have
We check common key names. DKIM keys can use any name.