Gmail & Yahoo Sender Requirements
Gmail and Yahoo now enforce hard rules for bulk senders. Miss them and your mail is throttled or rejected. Here's the compliance checklist.
TL;DR
Bulk senders must: authenticate with SPF, DKIM and DMARC, support one-click unsubscribe, and keep complaints under 0.3%. These are enforced by Gmail and Yahoo.
Who the rules apply to
The requirements target bulk senders — roughly those sending 5,000+ messages a day to Gmail/Yahoo addresses — but following them is best practice for everyone.
Requirement 1 — Authenticate everything
You must publish and pass SPF, DKIM and DMARC, with DMARC alignment. See the official Gmail sender guidelines for specifics. This is non-negotiable.
Requirement 2 — One-click unsubscribe
Marketing mail must include a working one-click unsubscribe (List-Unsubscribe header) and honour requests within 2 days. Easy opt-out reduces complaints.
Requirement 3 — Stay under the complaint threshold
Keep spam complaints below 0.3% (aim under 0.1%). Cross it and Gmail/Yahoo throttle or reject your mail.
Other expectations
- Valid forward and reverse DNS (rDNS).
- TLS for connections.
- Don't impersonate Gmail/Yahoo From addresses.
- Clean list hygiene and proper warmup.
Yahoo's rules mirror Gmail's
Yahoo's sender requirements align closely with Gmail's — meet one and you largely meet both.
AutoPMTA's DNS Health checks every requirement — authentication, rDNS and more — before you send. View plans.
Key takeaways
- Authenticate with SPF, DKIM and DMARC (with alignment).
- Provide working one-click unsubscribe, honoured in 2 days.
- Keep spam complaints under 0.3% (ideally <0.1%).
- Yahoo's rules mirror Gmail's — comply once, satisfy both.
Frequently asked questions
What are the Gmail bulk sender requirements?+
Bulk senders must authenticate email with SPF, DKIM and DMARC (with alignment), provide a working one-click unsubscribe honoured within two days, and keep spam complaint rates below 0.3%.
Who counts as a bulk sender?+
Gmail and Yahoo define bulk senders as those sending roughly 5,000 or more messages per day to their addresses, though all senders should follow the same best practices.
What happens if I don't meet the requirements?+
Non-compliant mail is throttled, sent to spam, or outright rejected by Gmail and Yahoo. Meeting the requirements is essential for reliable delivery to those providers.