In today’s digital age, where email communication remains one of the most widely used tools both personally and professionally, security, authenticity, and trust in electronic messages have become critical priorities. Billions of emails are sent worldwide each day, with a significant portion being phishing attempts, fraud, spam, or malicious messages designed to impersonate legitimate companies.
This reality poses a constant and complex challenge for organizations: How can they ensure their emails reach recipients without being mistaken for spam or fraudulent emails? Moreover, how can they build trust in such a vulnerable and saturated channel?
The answer to this issue lies not only in the technical aspects of cybersecurity but also in a visual and branding dimension capable of generating immediate trust and instant recognition from users. It is in this context that BIMI (Brand Indicators for Message Identification) emerges—a specification that not only enhances email security but also introduces a visual and branding element that benefits both senders and recipients.
BIMI allows companies to display their verified logo directly in the user’s inbox, right next to the sender's name, as long as the message meets strict authentication requirements. Thus, BIMI not only provides security but also boosts visibility, user experience, and the positive perception of the brand. Below, MoodWebs explains everything you need to know about BIMI.
What Exactly is BIMI?
BIMI, or Brand Indicators for Message Identification, is a technical specification developed to leverage existing email authentication standards like SPF, DKIM, and DMARC, and allow organizations to publish an official logo that will be displayed by compatible email service providers. In simple terms, BIMI is a way for businesses to visually communicate to their customers that an email they are receiving is authentic and has passed strict security checks.
The primary goal of BIMI is to offer a safer, more consistent, and visually recognizable experience in users' inboxes, allowing them to quickly distinguish a legitimate email from a potentially malicious one. Instead of relying solely on invisible technical filters, BIMI uses a visual signal—the company’s official logo—as a trust seal displayed next to the sender's name.
This visual BIMI indicator is especially valuable in an environment where users receive dozens or even hundreds of emails daily and often find it difficult to distinguish between authentic messages and those designed to deceive. With BIMI, the simple act of seeing a recognized logo can generate instant trust, increasing the likelihood of interaction with the email and reducing the risk of falling for scams or phishing attempts.
For businesses, BIMI is not only a security tool but also a powerful marketing channel that increases brand visibility in the most widely used digital communication medium: email. The combination of security and branding makes BIMI a strategic component in modern digital communication management.
Evolution of Email and the Need for Visual Authentication
Email is one of the oldest and most widely used technologies on the internet. It was originally conceived in an era when security was not a critical priority, which led to a basic design without robust mechanisms to verify the sender’s identity or protect the integrity of the message.
This vulnerability was quickly exploited by malicious actors to create spoofing (identity impersonation) and phishing attacks, affecting both individual users and businesses. As email grew explosively as a communication channel, the threats also grew in complexity and volume. To combat this, the industry developed several key technologies to validate the authenticity of the sender and the integrity of the message:
- SPF (Sender Policy Framework): Allows domain owners to define, via a DNS record, which servers are authorized to send emails on behalf of their domain. This helps prevent unauthorized servers from sending fraudulent emails pretending to be from that domain.
- DKIM (DomainKeys Identified Mail): Introduces a digital signature that ensures the content of the message has not been altered in transit. It uses cryptography to sign the email from the sending server, and the public key is published in the DNS for recipients to verify the signature.
- DMARC (Domain-based Message Authentication, Reporting & Conformance): Integrates and extends SPF and DKIM by defining clear policies indicating what should be done if an email fails SPF or DKIM validations (e.g., quarantine or reject). Additionally, it allows reporting that helps administrators monitor fraud attempts.
These technologies have been fundamental advances in improving email security but have one major limitation: they are invisible to most end users. That is, while the receiving server may technically validate that a message is authentic, the user does not have a clear visual signal to help them recognize it.
That’s where BIMI comes in as an essential complement. By using the already established technical authentication to allow the display of the company’s official logo, BIMI turns technical validation into a visual signal that is easily recognizable and understandable to the average user, strengthening trust at first glance.
The Strategic Importance of BIMI for Businesses
Implementing BIMI goes far beyond a mere technical issue; it is an integrated strategy that combines security, marketing, and user experience to generate tangible value. The advantages BIMI offers businesses are significant and multifaceted:
- Enhanced Brand Visibility: Displaying the company logo in the inbox with BIMI creates a consistent and memorable brand experience in one of the most important digital channels. Email thus becomes an extension of corporate branding, where the visual image reinforces the message.
- Increased Open Rate: Various digital marketing studies have shown that emails that include reliable visual elements, like a verified logo, such as with BIMI, can increase open rates by up to 10%. This is because the recipient perceives the message as more legitimate and valuable and is more willing to interact with it.
- Reduced Phishing and Fraud: BIMI relies on strict DMARC policies, which require companies to adopt good security practices for their emails to be considered legitimate. This makes identity impersonation much harder, reducing the risk of attacks that could damage the brand's reputation and customer trust.
- Customer Loyalty: When users perceive that a company protects its communications and cares about their security with BIMI, it strengthens trust and loyalty towards the brand, fostering long-term, positive business relationships.
- Competitive Advantage: In highly competitive sectors where many companies vie for users' attention in the inbox, standing out with a visible and trusted logo with BIMI can be a key differentiator that attracts more customers and improves campaign effectiveness.
In summary, BIMI is not just a security tool but also a powerful marketing and user experience asset that directly contributes to business objectives.
How Does BIMI Work Together with SPF, DKIM, and DMARC?
For BIMI to work properly, the email domain must meet a series of strict technical requirements related to existing authentication technologies:
- SPF: The domain must have an SPF record configured in DNS that clearly defines which servers are authorized to send emails on behalf of the company. This prevents third parties from sending fake messages using the domain.
- DKIM: Emails must be digitally signed using DKIM, with a private key securely kept by the sending server, while the public key is published in DNS so the recipient can verify the integrity of the message.
- DMARC: It is essential that the domain’s DMARC policy is configured with a high level of protection, preferably in "quarantine" or "reject" mode. The "none" (no policy) configuration is insufficient to enable BIMI. This ensures that emails failing SPF and DKIM validations are properly handled and not delivered as legitimate emails.
Only when these standards are correctly implemented and operational can the company proceed with BIMI configuration, knowing that the emails sent are authentic and comply with the required security policies.
Verified Mark Certificate (VMC)
One of the key differentiators of BIMI is the Verified Mark Certificate (VMC). This BIMI certificate is issued by recognized certifying authorities (such as DigiCert or Entrust) and serves to confirm that the company wishing to display a logo is the legitimate owner of that logo. Obtaining a VMC involves a rigorous validation process that ensures:
Legal rights over the logo: The company must demonstrate that it holds the legal rights and legitimate use of the logo it intends to display in emails.
Legal constitution and formality: The organization must be duly established and registered as a legal entity, providing an additional level of trust in its identity.
Compliance with extended validation standards: The verification is exhaustive, similar to the one conducted for extended validation SSL/TLS certificates, ensuring the authenticity of the company.
This BIMI certificate, much like an SSL certificate, adds trust and solidity to the email authentication ecosystem, ensuring that the logo displayed is legitimate and not forged.
Step-by-Step Technical Process for Implementing BIMI
Implementing BIMI involves several coordinated technical steps that must be followed carefully to ensure success:
Configure SPF, DKIM, and DMARC: Before any visual implementation, it is essential that the domain complies with the three pillars of email authentication. This ensures that only authentic messages can pass technical validations.
Create and validate the logo: The logo must be in SVG Tiny PS format, a secure and simplified variant of the standard SVG format, which ensures scalability, clarity, and compliance with email provider requirements.
Obtain the VMC: The company must hire a certifying authority to obtain a Verified Mark Certificate. This requires submitting legal documentation, demonstrating rights over the logo, and undergoing a thorough verification process.
Publish the BIMI record in DNS: A TXT record is published in the subdomain default._bimi.yourdomain.com with the following structure:
default._bimi.yourdomain.com TXT "v=BIMI1; l=https://yourdomain.com/logo.svg; a=https://yourdomain.com/certificate.vmc"
Where:
v=BIMI1 specifies the BIMI protocol version.
l= defines the public URL of the logo in SVG Tiny PS format.
a= points to the URL of the VMC certificate.
Verification and Deployment: Once the records are published, compatible email providers like Gmail or Yahoo perform DNS queries when an email arrives from that domain with BIMI. If everything is in order, they will display the official logo next to the sender, providing the expected visual experience.
Visual Impact and User Experience
One of the most innovative and valuable aspects of BIMI is that it translates complex technical authentication into a clear and tangible visual signal for the user. BIMI has a direct and positive impact on the user experience on several levels:
Instant trust: Seeing a verified official logo with BIMI immediately signals to the user that the email is legitimate, which increases the likelihood of opening it and interacting with its content.
Better usability and navigation: The inbox with BIMI becomes more visual and organized, making it easier to prioritize important messages and helping users manage their email more efficiently.
Reduced fraud: The absence of the expected logo in emails supposedly from a brand raises suspicion, making users less likely to fall for scams and phishing attempts.
Additionally, with the incorporation of additional elements like the "blue check" verification in Gmail for domains with BIMI and VMC, the message appears even more trustworthy, resembling the verifications seen on social media and digital platforms. This boosts the perception of security and professionalism.
Challenges in Adopting BIMI
Despite its many benefits and disruptive potential, BIMI still faces several challenges that organizations interested in implementing it must consider:
Cost: Obtaining a BIMI VMC can represent a significant investment, especially for small and medium-sized businesses with limited budgets for security and digital branding.
Compatibility: While major email providers like Gmail and Yahoo already support BIMI, not all email services have adopted this specification. Global adoption is growing, but there are still platforms and clients that do not display the BIMI logo.
Complex technical requirements: Properly configuring SPF, DKIM, and DMARC requires specialized technical knowledge and, in many cases, professional support to avoid errors that could affect email delivery.
End-user education: Although the logo is a clear visual indicator, not all users are familiar with its meaning or understand its importance for security. Educating and raising awareness among users is key to maximizing the impact of BIMI.
The Future of BIMI and Its Global Adoption
As more email platforms adopt BIMI, this technology is expected to become a de facto standard for visual email authentication. The adoption of BIMI is being driven by some of the major tech companies and email providers:
Google: Has implemented BIMI in Gmail along with the "verification badge" that adds an extra level of visual trust.
Yahoo: Was one of the pioneers in supporting BIMI and has actively promoted its adoption.
Apple and Microsoft: Although still evaluating BIMI implementation, they show clear signs of openness and pilot testing towards future adoption.
Moreover, the integration of BIMI in mobile email clients, enterprise systems, and marketing automation tools will significantly contribute to its expansion and mass adoption. Over time, BIMI is expected to become a standard requirement for all brands wishing to protect their reputation and maximize the impact of their digital communications.
BIMI represents a significant advancement in email security and visibility. By combining robust authentication with a clear visual experience, BIMI offers tangible benefits for both businesses and users: It improves brand reputation and presence in a key channel, increases recipient trust, which translates into higher open rates and better engagement, reduces the risks of identity impersonation and phishing attacks, protecting both the company and its customers, and enhances the effectiveness of digital marketing campaigns and customer loyalty.
More than a passing trend, BIMI is part of a broader movement towards more transparent, secure, and user-centered digital communication. For brands that want to stand out in an increasingly saturated and complex environment, implementing BIMI is not only advisable, but it is becoming essential.
Investing in BIMI is investing in security, branding, and customer experience—three essential pillars for sustainable digital success. Adopting BIMI is ultimately preparing the ground for modern, trustworthy, and effective business communication, generating long-term value and protecting the integrity of relationships with users in an ever-evolving digital world.
If you would like to learn more about BIMI and how to implement it in your company, contact us at [email protected]. Our team of digital marketing experts can help you implement BIMI in the most optimal way, allowing you to leverage all its benefits.
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