Google and Yahoo bulk sender requirements

Since February 2024, senders posting more than 5,000 messages a day to Gmail or Yahoo must authenticate with SPF and DKIM, publish DMARC, offer one-click unsubscribe, and stay under a 0.3% spam complaint rate.

What causes it

• Crossing the 5,000/day threshold without DMARC published, which is the requirement most senders miss.

How to fix it

Publish SPF and DKIM for every sending source, add at minimum v=DMARC1; p=none; rua=... at _dmarc.yourdomain, and make sure the From: domain aligns with your DKIM signing domain. The threshold counts per-domain, per-day, across both providers.

Check your domain

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