Does Microsoft 365 Support BIMI?
As of the last verified update (mid-2026), Microsoft 365 (Outlook.com and Exchange Online) does not support the BIMI standard for displaying sender logos in the way that Gmail does. Microsoft uses its own logo verification mechanism — Brand Indicators — which operates independently of the BIMI DNS record and VMC/CMC certificate infrastructure. A correctly configured BIMI record with a VMC has no display effect in Microsoft 365 inboxes under this system. Microsoft’s support model should be verified against current official documentation before making implementation decisions.
What Microsoft 365 Uses Instead
Microsoft’s Outlook.com and Exchange Online environments have implemented their own logo display system, sometimes referred to as Brand Indicators or BIMI-adjacent. As of mid-2026, this system operates independently of the BIMI DNS record and VMC/CMC certificate infrastructure that governs display in Gmail and other BIMI-participating providers.
Microsoft’s logo display has historically been tied to their own verification process and requirements, which differ from the CA-issued certificate model used by BIMI. Organizations that have set up BIMI correctly for Gmail should not assume that configuration also activates logo display in Outlook.
Support Status by Provider Context (June 2026)
| Provider / Context | BIMI Support (as of June 2026) | Notes |
|---|---|---|
| Gmail (Google Workspace) | Supported | Requires VMC and DMARC enforcement. Blue checkmark displayed for VMC holders. |
| Outlook.com / Exchange Online | Not supported | Uses separate Microsoft logo display system. BIMI record has no display effect here. |
| Yahoo Mail / AOL | Supported | Early adopters of BIMI. VMC or CMC may be required depending on current policy. |
| Apple Mail (iCloud) | Partial / Variable | Support has been reported in some contexts. Behavior may vary by client version and account type. |
| Fastmail | Supported | BIMI support announced and implemented as of 2024–2025. |
What This Means for Implementation Planning
A BIMI setup — DNS record, VMC certificate by a trusted CA, DMARC at enforcement — delivers logo display to Gmail and other participating providers. It does not deliver logo display to Microsoft 365 inboxes under the current separation of systems. If a significant portion of your target recipients use Outlook.com or Exchange Online, separate research into Microsoft’s current logo program requirements is needed.
BIMI is still worth implementing for Gmail reach. Gmail and Yahoo Mail together represent a substantial share of consumer and business email. The absence of Microsoft 365 support limits reach but does not make BIMI implementation pointless. See Why Isn’t My BIMI Logo Showing? if logo display issues exist in Gmail specifically.