Why are our B2B email open rates suddenly dropping to single digits across all campaigns and how do I fix the deliverability issue right now
Download run
Fan-out diagram
The searches the AI actually ran for this prompt.
SEED QUERY
Why are our B2B email open rates suddenly dropping to single digits across all campaigns and how do I fix the deliverability issue right now
1 real search · 1 real-search pass
2026 email sender deliverability requirements Gmail Yahoo Microsoft bulk sender authentication DMARC SPF DKIM spam rate guidanceGoogle ↗
OBSERVED
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
Classifying 1 queries…
Searches and sources
ChatGPT1 real searches · gpt-6
2026 email sender deliverability requirements Gmail Yahoo Microsoft bulk sender authentication DMARC SPF DKIM spam rate guidance Google ↗
- Google Admin Toolbox – Check MX · toolbox.googleapps.com
- MXToolbox – DNS and blacklist checks · mxtoolbox.com
- Mail-Tester – Message authentication tests · mail-tester.com
- Google Postmaster Tools · postmaster.google.com
- Email sender guidelines FAQ · support.google.com
- Email sender guidelines · support.google.com
- Microsoft 365 email authentication troubleshooting · learn.microsoft.com
- Sender Best Practices · senders.yahooinc.com
- Outbound spam protection - Microsoft Defender for Office 365 · learn.microsoft.com