Operations
Google and Yahoo 2024 sender requirements: the practical checklist
Since February 2024, Gmail and Yahoo require bulk senders (5000+ per day) to authenticate properly, support one-click unsubscribe, and keep complaint rate below 0.3%.
Authentication requirements
All bulk senders must publish DMARC (at least p=none with rua reporting). SPF or DKIM must align with the From: domain. Gmail and Yahoo will reject mail that fails this.
One-click unsubscribe
Implement List-Unsubscribe and List-Unsubscribe-Post: List-Unsubscribe=One-Click as described in our list-unsubscribe guide. Required for marketing traffic.
Complaint rate ceiling
Keep spam complaint rate (per Postmaster Tools) under 0.3% over a rolling window. 0.1% is the practical safety margin. Above 0.3% you'll see immediate placement degradation.
Operational implications
Run a re-engagement campaign quarterly, suppress unengaged subscribers, segment by engagement, and never send marketing mail from the same subdomain as transactional.
Frequently asked questions
- Does this affect transactional mail?
- Authentication requirements yes, one-click unsubscribe no. But if your transactional volume crosses 5000/day, the authentication side matters even more.