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Verify your domain meets Google and Yahoo's 2024 bulk sender requirements. Check SPF, DKIM, DMARC, PTR, and more in one scan.
Enter your sending domain to check against Google and Yahoo's 2024 bulk sender requirements.
Starting February 2024, Google and Yahoo enforce stricter requirements for bulk senders. These include: SPF and DKIM authentication for all sent email, a DMARC record with at least p=none, valid PTR records for sending IPs, TLS encryption, one-click unsubscribe (RFC 8058) for marketing email, and maintaining spam complaint rates below 0.3%.
Google defines a bulk sender as anyone sending 5,000+ messages to Gmail accounts in a single day. Once you hit this threshold, you are permanently classified as a bulk sender. Yahoo applies similar requirements without a specific volume threshold — they recommend all senders comply regardless of volume.
Non-compliant emails may be rejected, rate-limited, or sent to spam. Google enforces gradually: first with temporary errors (421 codes), then permanent rejection (550 codes). Yahoo may silently filter non-compliant email to spam without a bounce. Both providers have been progressively tightening enforcement since February 2024.
This tool verifies 5 requirements via DNS: SPF record, DKIM signing (checks common selectors), DMARC policy, MX records, and reverse DNS (PTR). The remaining requirements — TLS encryption, ARC headers, one-click unsubscribe, and spam rates — require inspecting actual email headers or Google Postmaster Tools and are shown as informational checks.
Unboxd reads every email and gives you a daily briefing with only what matters.