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GuideJul 12, 20265 min
How to Read Email Headers (A Deliverability Debugging Guide)
Learn to read raw email headers: Received chains, Authentication-Results, spam verdict headers, and the failure signatures that explain spam placement.
Read moreGuideJul 8, 20265 min
How to Warm Up a Microsoft 365 Inbox (Outlook, Exchange Online)
How to warm up a Microsoft 365 mailbox: connecting via OAuth, SmartScreen and EOP filtering, tenant reputation, sending limits, and common gotchas.
Read moreGuideJul 6, 20265 min
How to Warm Up a New Google Workspace Inbox (Step by Step)
Step-by-step guide to warming up a new Google Workspace mailbox: DNS setup, OAuth connection, the day-by-day ramp schedule, and Google-specific gotchas.
Read moreGuideJul 5, 20265 min
How to Set Up SPF, DKIM, and DMARC (Step by Step)
A step-by-step guide to SPF, DKIM, and DMARC: exact record syntax for Google, Microsoft, and Zoho, safe DMARC rollout, and common mistakes to avoid.
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