BIMI lets your brand logo appear next to your emails in Gmail, Yahoo, and Apple Mail — before the recipient even opens the message. The standard has existed since 2021, but a significant cost barrier limited adoption: displaying a logo in Gmail required a Verified Mark Certificate (VMC) that costs $1,000–$1,500 per year and requires active trademark registration.
In 2025, Google changed this. The launch of the Common Mark Certificate (CMC) removes the trademark requirement. Any brand that has used a logo for at least one year can now get a CMC and display their logo in Gmail — at a fraction of the cost and complexity.
BIMI in 2025
How BIMI Works
BIMI is a DNS-based standard. When your email arrives in a supporting inbox, the receiving server checks your DNS for a BIMI record, retrieves your logo file from the specified URL, verifies the certificate, and displays your logo in the inbox view.
The result: recipients see your brand logo next to your sender name and subject line before opening. For brand-recognized senders — retail, media, SaaS products with visual identity — this is a meaningful visibility advantage at the moment of inbox scanning.
The Three Components You Need
1. DMARC at Enforcement
BIMI requires DMARC at p=quarantine or p=reject. Monitoring mode (p=none) is not sufficient.
This is the hardest requirement for many senders because moving to DMARC enforcement means messages that fail DMARC authentication will either be quarantined or rejected. You must verify that all legitimate email streams pass DMARC alignment before enforcing:
- Your primary ESP (Klaviyo, Mailchimp, BayEngage, etc.)
- Transactional email providers (SendGrid, Postmark, etc.)
- Marketing automation platforms
- CRM tools that send email on your behalf
- Any third party that uses your domain in the From address
DMARC Monitoring from InboxEagle shows you which sending sources are passing and which are failing before you enforce — preventing accidental blocking of legitimate mail.
2. An SVG Logo File
BIMI requires your logo in SVG Tiny PS format — a specific SVG profile with restrictions on fonts, gradients, and effects. Standard SVGs from design tools don’t automatically comply. A few technical notes:
- Your logo must be square (1:1 aspect ratio)
- The SVG must use the correct SVG Tiny PS profile
- The file must be hosted at a publicly accessible HTTPS URL
- Complex effects (drop shadows, gradients on gradients) may not render correctly in all clients
Most graphic designers familiar with email standards can produce a compliant BIMI SVG. The BIMI Group’s SVG validator can check your file for compliance before you publish the DNS record.
3. A Certificate (VMC or CMC)
This is where 2025’s change matters.
Verified Mark Certificate (VMC) — Traditional Option
- Requires active trademark registration in the country of use
- Costs $1,000–$1,500/year from DigiCert or Entrust
- Provides the highest level of verification (trademark ownership confirmed)
- Required for BIMI display in Gmail (before CMC was available)
- Still accepted by all providers
Common Mark Certificate (CMC) — New 2025 Option (Google)
- Requires one year of documented logo use — no trademark registration needed
- Lower cost than VMC (pricing varies by provider — check DigiCert and Entrust for current rates)
- Accepted by Gmail for BIMI logo display
- Broader accessibility for smaller brands and startups
- Not yet universally accepted — Yahoo currently recommends but doesn’t require any certificate
Yahoo’s Approach Yahoo displays BIMI logos without requiring a certificate at all — the DMARC enforcement and valid logo file are sufficient. A VMC enhances the display but isn’t mandatory for Yahoo BIMI.
Who Supports BIMI
| Provider | BIMI Support | Certificate Required |
|---|---|---|
| Gmail | Yes (full logo display) | VMC or CMC |
| Yahoo Mail | Yes (full logo display) | Not required (VMC recommended) |
| Apple Mail | Yes (iOS 16+, macOS Ventura+) | Depends on implementation |
| Outlook | Not currently | N/A |
Outlook does not currently support BIMI. Given that Microsoft processes hundreds of millions of mailboxes, this limits BIMI’s overall reach — but Gmail + Yahoo already covers a majority of consumer inboxes for most B2C senders.
The Business Case for Implementing BIMI
Open Rate Lift
Senders implementing BIMI report open rate lifts of up to 39% in supporting inboxes. The mechanism is straightforward: a recognizable logo in the inbox view increases the chance a subscriber identifies and opens your email. For brands with strong visual recognition — retail, consumer apps, media brands — this is a meaningful performance gain per campaign.
First-Mover Advantage
BIMI adoption remains low. Only about 5.7% of domains have implemented it. Most of your competitors’ emails show a generic initial avatar next to their sender name in Gmail — no logo. At current adoption rates, implementing BIMI gives you a differentiated inbox presence for the foreseeable future.
Trust Signal
The certificate (VMC or CMC) confirms to Gmail that your logo is verified. This provides an additional trust signal to recipients, particularly for brands in financial services, healthcare, or other sectors where impersonation is a concern.
What the Implementation Process Looks Like
Here’s the typical sequence for implementing BIMI with a CMC:
- Confirm DMARC enforcement: Get to
p=quarantineorp=rejectwith zero legitimate mail failing - Create a compliant SVG logo: Convert your logo to SVG Tiny PS format and validate it
- Host the SVG at a public HTTPS URL: Your web server, CDN, or your ESP’s asset hosting
- Obtain a CMC (or VMC if you have trademark registration): Work with a BIMI certificate provider
- Publish the BIMI DNS record:
default._bimi.yourdomain.com TXT "v=BIMI1; l=https://yourdomain.com/logo.svg; a=https://your-certificate-url" - Verify using a BIMI lookup tool: Confirm the record resolves correctly and the certificate validates
- Test in Gmail: Send to a Gmail address and verify the logo appears in the inbox
The process takes 1–4 weeks depending on how quickly you can get the SVG compliance handled and the certificate issued.
Is BIMI Worth It?
Yes, if:
- Your brand has strong visual recognition that benefits from logo visibility
- You send to a list with significant Gmail and Yahoo penetration
- You already have DMARC at enforcement (or are close)
- You have the design resources to create a compliant SVG logo
Wait, if:
- You’re still at DMARC
p=none— implement enforcement first; BIMI requires it - Your brand logo isn’t distinctive enough to meaningfully drive opens
- Your list is primarily B2B with heavy Outlook penetration (Outlook doesn’t support BIMI)
Start with the foundation first. BIMI is a visible signal, but it doesn’t affect spam filtering or inbox placement. If you have deliverability problems, fix authentication, complaint rate, and list hygiene before pursuing BIMI. A logo in the inbox doesn’t help if the email is in spam.
The Bottom Line
BIMI is a visibility feature, not a deliverability fix. It gives subscribers a reason to trust the logo they see in their inbox — but only if your email is already reaching that inbox.
- DMARC enforcement (p=quarantine or p=reject) is required — BIMI cannot be implemented at p=none; fix authentication first
- CMC made BIMI accessible without trademark — Google’s 2025 Common Mark Certificate requires only one year of logo use; no IP registration needed
- Gmail and Yahoo cover most B2C consumer inboxes — Outlook’s lack of BIMI support matters more for B2B lists
- 5.7% domain adoption means first-mover advantage still exists — your competitors likely show a generic initial avatar where you’d show a verified logo
- The 39% open rate lift is in BIMI-supporting inboxes only — results vary by brand recognition and list ISP distribution
Next Steps
To get started with BIMI after reading this:
- Check your DMARC status at DMARC Record Generator — if you’re at
p=none, make a plan to move to enforcement - Enable DMARC Monitoring to see which of your sending sources are passing DMARC alignment before you enforce
- Research CMC providers if you don’t have trademark registration — the 2025 launch makes this significantly more accessible
- Once you’re at enforcement, implement BIMI as a competitive advantage in Gmail and Yahoo inboxes
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