Donaldson R F BIMI Record Helper
Create the BIMI DNS record that lets mailbox providers show your logo next to your emails, and check your logo file against the main SVG rules.
Check your SVG logo
What BIMI needs
BIMI (Brand Indicators for Message Identification) lets your logo appear next to your messages in supporting inboxes. It needs: (1) DMARC enforcement — a policy of quarantine or reject with pct=100 (see the DMARC record generator); (2) a logo in SVG Tiny Portable/Secure format (square, no scripts, images or external links, under about 32 KB) served over https; and (3) for Gmail and Apple Mail, a Verified Mark Certificate (VMC) or Common Mark Certificate (CMC) from an approved authority, whose .pem address goes in the a= tag. Some other providers show the logo without a certificate.
Publish the record as a TXT record named default._bimi under your domain. The SVG checker looks for the common problems (the required version and baseProfile, a square shape, forbidden elements, external references and file size) — it is a helpful first check, not a full validator, so also test with your certificate provider’s tool. Verify the live records with the SPF & DMARC checker.
Frequently asked questions
Do I need a certificate?
For Gmail and Apple Mail, yes. Without one your logo may still show at a few other providers.
What is the selector?
“default” in almost every case; other selectors are for special set-ups.
Is my logo uploaded?
No. The SVG is checked in your browser.