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Email authentication
All our email authentication guides
Email authentication
27 June 2026
Email Authentication for Mailchimp
Sending campaigns from Mailchimp? Authenticating your domain makes them land in the inbox and pass DMARC. Here's how email authentication works for Mailchimp and how to check it.
Email authentication
27 June 2026
Email Authentication for Shopify (SPF, DKIM & DMARC)
Shopify sends order and marketing emails as your domain — so it needs proper authentication. Here's how SPF, DKIM and DMARC work for a Shopify store and how to check yours.
Email authentication
27 June 2026
What Is ARC? (Authenticated Received Chain)
Forwarding and mailing lists break SPF and DKIM, so legitimate mail can fail DMARC. ARC (Authenticated Received Chain) fixes that by preserving the original authentication. Here's how.
Email authentication
27 June 2026
What Is DMARC Alignment? (Relaxed vs Strict)
DMARC can fail even when SPF and DKIM pass — because of alignment. Here's what DMARC alignment means, the difference between relaxed and strict, and how to fix alignment failures.
Email authentication
27 June 2026
SPF Record Examples (Copy-Paste for Common Setups)
Need an SPF record? Here are copy-paste SPF examples for Google Workspace, Microsoft 365, third-party senders and parked domains — plus the syntax explained. Free check.
Email authentication
27 June 2026
DKIM Selector Explained (And How to Find Yours)
A DKIM selector tells receivers which public key to use to verify your email. Here's what a selector is, how to find yours, and why it matters — with a free check of your domain.
Email authentication
27 June 2026
How to Create a DMARC Record (with Examples)
A plain-English guide to creating a DMARC record: every tag explained, copy-paste examples for starting out, enforcement and parked domains, and a free check of your result.
Email authentication
27 June 2026
How to Read DMARC Reports (RUA)
DMARC aggregate (RUA) reports arrive as unreadable XML. Here's what's actually in them, how to read the key fields, what to look for, and how to act on what you find.
Email authentication
27 June 2026
Is My Domain Spoofable? (Free Spoofing Test)
Find out in seconds whether someone can send email pretending to be your domain. A free spoofing test that checks your SPF, DKIM and DMARC — and how to lock it down.
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.