deliverability
5 posts
- 01deliverability4 min read
The 0.3% Spam Rate: How to Monitor and Stay Under Google's Threshold
Google requires bulk senders to keep their user-reported spam rate under 0.3% — and really under 0.1%. Where the number comes from, how to watch it in Postmaster Tools, and what to do when it climbs.
- 02deliverability5 min read
DMARC Passes but Email Still Lands in Spam
Passing SPF, DKIM and DMARC is the entry ticket to the inbox, not a guarantee. Why aligned mail still gets filtered, and how to find the real cause.
- 03deliverability5 min read
Microsoft 365 Sender Requirements Enforced
Microsoft now requires SPF, DKIM and an aligned DMARC record for bulk mail to Outlook.com. Who's affected and how it compares to Google and Yahoo's rules.
- 04dmarc6 min read
DMARC Rollout Playbook: p=none to p=reject
Moving from p=none to p=reject is where most DMARC projects stall. A staged, evidence-driven path to enforcement that won't block legitimate mail.
- 05deliverability4 min read
Google & Yahoo Sender Requirements 2026
The 2026 Yahoo & Google bulk-sender rules — SPF, DKIM, DMARC alignment, one-click unsubscribe, and the 0.3% spam-rate limit — in one checklist to confirm you comply.