Free tools
BIMI checker
Enter the From domain that would publish BIMI. BIMI requires aligned SPF, DKIM, and a strict DMARC policy (quarantine or reject).
What this checks
BIMI TXT at default._bimi.domain, logo URL (l= tag), authority evidence (a= tag), and selector syntax.
Why it matters
BIMI can display your verified logo beside authenticated mail. Missing or invalid BIMI blocks brand presentation in supporting inboxes.
Results
Common issues
- Publishing BIMI before DMARC reaches quarantine or reject.
- Logo URL not served over HTTPS or wrong image format.
- Missing or invalid authority evidence for providers that require VMC.
How to fix
- Reach consistent SPF and DKIM pass rates, then tighten DMARC policy.
- Host a square SVG logo at a stable HTTPS URL referenced in the l= tag.
- Obtain VMC if your target mailbox providers require it.
How MailFleet helps
MailFleet campaign preparation surfaces authentication alignment so teams know when BIMI prerequisites are met.
Related free tools
Delivery note: MailFleet helps users manage campaigns through their own sending providers. Delivery outcomes depend on sender reputation, DNS authentication, content quality, recipient engagement, list quality, provider rules, and mailbox filtering systems.
For regulatory context on commercial email in the United States, see the FTC CAN-SPAM compliance guide.
Frequently asked questions
No. BIMI requires DMARC at p=quarantine or p=reject with alignment. Fix authentication before pursuing BIMI.
Get started
Prepare and control campaigns with MailFleet
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- Windows 10+
- macOS 12+
- Linux (DEB & RPM)
Same desktop experience across every platform — one workflow for your entire team.