[ Free tool · Email Authentication ]
Google & Yahoo Sender Check
Pass/fail against the Gmail and Yahoo bulk-sender rules.
[ About this tool ]
This sender check tests your domain against the Gmail and Yahoo bulk sender requirements: SPF, DKIM, DMARC and alignment.
How to read the results
- ›DMARC p=none is the minimum; enforcement is recommended.
- ›Complaint rate and one-click unsubscribe are checked in your sending platform.
Frequently asked questions
Am I a bulk sender?
Google defines bulk senders as sending close to 5,000 or more messages a day to Gmail accounts.
Learn more in our guide: Email Deliverability: How to Reach the Inbox, Not Spam
Enterprise provenance
Why top financial institutions and governments retired their email security dashboards.
Traditional email authentication platforms sell you a dashboard and ask your engineers to do the labour. In high-stakes environments, manual oversight means delayed enforcement, configuration drift and unmonitored shadow domains.
EmailAuth is the agentic email provenance platform. Our agents enforce p=reject, keep third-party senders aligned and move your domains to full RFC 9989 compliance, the new DMARC standard,, with human-in-the-loop auditability.
SaaS · Dedicated tenancy · Air-gapped on-prem · BYOK encryption
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