Why It Went to SpamYour email went to spam. Here's why, and how to fix it.
Each page answers one question, starting with a short answer and then the detail. Answers cite the standards and the mailbox providers' own published guidance.
The basics
Authentication
- What is SPF?Sender Policy Framework explained: what it checks and what it does not.
- How do I write an SPF record?Building an SPF record step by step, including the 10-lookup limit.
- What is DKIM?How DKIM signs messages and how receivers check the signature.
- What is DMARC?How DMARC ties SPF and DKIM to the From address, and what the policies mean.
- How do I roll out DMARC safely?A cautious path from monitoring to enforcement without blocking your own mail.