Does BIMI Improve Email Deliverability and Open Rates?
Learn how BIMI affects email open rates, brand recall, purchase likelihood, and inbox placement. Backed by Red Sift, Entrust, and DigiCert research.
Does BIMI Improve Email Deliverability and Open Rates?
Marketers evaluating BIMI (Brand Indicators for Message Identification) often ask two questions: Will it get more of my emails into the inbox? and Will more people open them? The honest answer is nuanced — and the data behind it is compelling.
This article separates what BIMI does directly from what it enables indirectly, and presents the research that quantifies the commercial impact.
What BIMI Actually Does
BIMI is a DNS-based standard that instructs participating email clients — Gmail, Apple Mail, Yahoo Mail, and others — to display your verified brand logo in the sender avatar position of every email you send.
To display that logo, you must meet two hard prerequisites:
- DMARC enforcement — your domain must publish a DMARC policy of
p=quarantineorp=reject. - A Verified Mark Certificate (VMC) — issued by an approved Certificate Authority (currently DigiCert or Entrust), confirming your logo is a registered trademark.
Understanding these prerequisites is essential to understanding BIMI's deliverability effect.
Does BIMI Directly Improve Deliverability?
No — not directly.
BIMI is a display standard. Mailbox providers do not use the presence or absence of a BIMI record as an inbox placement signal. Publishing a BIMI DNS record alone will not move your emails from the spam folder to the inbox.
However, this is only half the story.
The Indirect Deliverability Benefit: DMARC Enforcement
The deliverability benefit comes from what BIMI requires, not from BIMI itself.
DMARC at enforcement (p=quarantine or p=reject) means:
- Unauthenticated email claiming to be from your domain is blocked or quarantined.
- Spoofed and phishing emails using your domain are suppressed.
- Your domain's sender reputation is protected from abuse by third parties.
Mailbox providers — particularly Gmail and Microsoft — use sender reputation as a primary inbox placement signal. A domain with strong DMARC enforcement accumulates a cleaner sending history, which over time improves:
- Inbox placement rates
- Spam complaint attribution accuracy
- Domain reputation scores across major filtering systems
Key principle: BIMI does not improve deliverability. DMARC enforcement — which BIMI mandates — does.
If your domain is currently at p=none, the path to BIMI is also the path to materially better inbox placement.
The Open Rate and Engagement Evidence
Once your email reaches the inbox, BIMI's visual presence takes over. The research here is significant.
Red Sift and Entrust: 2021 Consumer Study
A joint study by Red Sift and Entrust measured consumer response to emails displaying a verified brand logo versus those without one. Key findings:
| Metric | United States | United Kingdom | |---|---|---| | Increase in open rates | +21% | +39% | | Increase in purchase likelihood | +34% | +34% | | Brand recall after 5 seconds | 44% higher | 44% higher |
These figures represent a substantial commercial uplift from a single, persistent visual signal — one that appears before the recipient has read a single word of your email.
The 44% improvement in brand recall after just five seconds of exposure is particularly relevant for marketers running high-frequency campaigns, where cumulative brand recognition compounds over time.
DigiCert: 2025 Consumer Trust Research
DigiCert's 2025 research adds a competitive dimension to the picture:
49% of consumers say they choose between competing brands based on whether the sender has a verified logo.
This finding reframes BIMI from a deliverability or engagement tool into a competitive differentiator. In categories where multiple brands are competing for the same inbox — financial services, retail, SaaS — the presence of a VMC-backed logo may be the deciding factor in whether a recipient opens your email or a competitor's.
Why the Logo Works: Trust Signals at the Point of Decision
The open rate lift is not arbitrary. It reflects how recipients make split-second decisions in a crowded inbox.
A Verified Mark Certificate signals to the recipient — consciously or not — that:
- The sender's identity has been independently verified.
- The brand is real, not a phishing attempt.
- The email is worth engaging with.
In an environment where phishing and brand impersonation are widespread, a verified logo functions as a trust signal at the exact moment a recipient decides whether to open or delete.
Summary: What BIMI Delivers for Marketers
| Benefit | Mechanism | Direct or Indirect | |---|---|---| | Improved inbox placement | DMARC enforcement protects sender reputation | Indirect | | Higher open rates | Verified logo increases recipient trust and recognition | Direct | | Higher purchase likelihood | Brand credibility at point of decision | Direct | | Stronger brand recall | Persistent visual identity across every send | Direct | | Competitive advantage | Differentiation from unverified senders | Direct |
The Implementation Path
To capture these benefits, you need to complete the following sequence:
- Audit your DMARC posture. Confirm your domain has a valid SPF record, DKIM signing, and a DMARC policy. If your policy is
p=none, you cannot qualify for BIMI. - Move to DMARC enforcement. Advance your policy to
p=quarantineorp=reject. This step delivers the indirect deliverability benefit. - Prepare your SVG logo. BIMI requires a specific SVG Tiny P/S format. Standard SVG files exported from design tools will not validate.
- Obtain a Verified Mark Certificate. A VMC is required for logo display in Gmail and other major clients. This requires a registered trademark.
- Publish your BIMI DNS record. Point to your hosted SVG and VMC.
Get Started
Free DMARC audit and SVG conversion → makeBIMI.com Check whether your domain qualifies for BIMI, identify gaps in your DMARC configuration, and convert your logo to the correct SVG Tiny P/S format — at no cost.
VMC brokerage for enterprise senders → veriBIMI.com veriBIMI.com brokers Verified Mark Certificates from accredited Certificate Authorities, managing the trademark verification and certificate issuance process on your behalf.
Last updated: July 2025. Statistics sourced from the Red Sift and Entrust 2021 Consumer Email Study and DigiCert 2025 Consumer Trust Research.