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Email authentication
All our email authentication guides
Email authentication
27 June 2026
How to Get Your Logo in Gmail (BIMI Setup)
Want your brand logo to show next to your emails in Gmail? That's BIMI. Here's what it needs (DMARC at enforcement first), how to set it up, and how to check your domain free.
Email authentication
27 June 2026
How to Set Up DKIM on Google Workspace & Microsoft 365
Step-by-step guide to enabling DKIM on Google Workspace and Microsoft 365, publishing the key in DNS, and verifying it passes — with a free check of your domain.
Email authentication
27 June 2026
Someone Is Sending Email From My Domain — How to Stop It
Getting bounce-backs or reports of spam 'from you'? Someone is likely spoofing your domain. Here's how to confirm it and stop it fast with DMARC — plus a free check.
Email authentication
27 June 2026
SPF vs DKIM vs DMARC: What's the Difference?
SPF, DKIM and DMARC explained and compared in plain English — what each does, how they work together to stop email spoofing, and how to check yours. With a free scan.
Email authentication
27 June 2026
Google & Yahoo Sender Requirements: Are You Compliant?
Since 2024 Google and Yahoo require SPF, DKIM and DMARC to deliver email. Check if your domain is compliant in seconds — and exactly how to fix it if it isn't.
Email authentication
27 June 2026
Why Are My Emails Going to Spam? (And How to Fix It)
Business emails landing in spam? Most of the time it's missing SPF, DKIM or DMARC. Here's how to find the real cause and fix it — with a free scan to check your domain.
Email authentication
27 June 2026
Email Spoofing: How Attackers Fake Your Domain (and How to Stop It)
How email spoofing works, why it's so easy without protection, and the three records — SPF, DKIM and DMARC — that stop attackers from sending phishing emails as your domain.
Email authentication
27 June 2026
SPF Records Explained: How to Check and Fix Yours
What an SPF record is, how the v=spf1 syntax works, the 10-lookup limit, the most common SPF mistakes (+all, multiple records, softfail) and how to check your SPF for free.
Email authentication
27 June 2026
What Is DMARC and How to Set It Up (Plain-English Guide)
DMARC explained in plain English: what a DMARC record is, how p=none, quarantine and reject work, how to check your DMARC record, and the common mistakes to avoid.