How to implement a BIMI record

If you are a frequent email user, whether as a marketer or in charge of communications within your organization, then you might have come across the BIMI record by which visibility and trust in the inbox can be increased.

What is BIMI?

BIMI (Brand Indicators for Message Identification) is a new standard that can curb the issue of online impersonators. Major companies are using emails to communicate with their customers. However, without a proper email verification method, email receivers (customers) have no assurance that the emails they get are indeed from a legitimate brand. As a result, sometimes they leave such emails unopened, as they fear fraudsters may be trying to con them. BIMI is a new standard that enables you to include your company’s logo alongside the emails you send. That way, your brand stands out among other emails, and your customers are sure that the emails are legitimate.

This page covers everything you need to know about BIMI:

How does BIMI operate?

If you include the company’s logo in your emails, your subscribers will trust the origin of your emails and will be more prone to open them. Similar to other sender verification methods like DMARC, SPF and DKIM, BIMI is a text record you store on your server. When your message is delivered, the recipient’s email service searches your BIMI text file. After verification, the BIMI record helps the email service locate your company’s logo, pulling it to the recipient’s inbox. The logo does not appear as part of the email. Instead, it appears on the mailbox providers. Fraudsters cannot place a similar logo in that part of the email. Thus, receivers can recognize genuine brands. This article is meant to help you understand how to implement a BIMI record and make your emails stand out among the other in the receiver’s inbox.

Initial Considerations for BIMI Implementation

1. Implement DMARC authentication on all your emails

  • For BIMI to work, your organization will have to implement DMARC authentication policies on the (marketing) emails. You can confirm whether DMARC has already been implemented or not by checking your DMARC Record. If DMARC is working, then you can continue with BIMI implementation.
  • Check email headers at Gmail, Microsoft, or Verizon Media (AOL and Yahoo!).
  • The DMARC policy (p=) should be set to “quarantine” or “reject.” For AOL and Yahoo!, in order to display your logo.

For more information about implementing DMARC for G-Suite or Office 365, please read the following guides: Google G Suite DMARC setup guide or Office 365 DMARC setup guide


2. Select the logo you want your subscribers to see in their inbox

  • The third consideration is the logo you would like to use in your emails. So far, BIMI only accepts SVG images. The image has to be square and contain only the logo, without any additional text. Store the logo in HTTPS and type the URL in the DNS TXT record.
  • If, later on, you want to change the image’s location, you will have to update the DNS record appropriately. You can also change your logo as you wish, so you don’t have to get stuck with one logo. Therefore, if you want to change your logo for the holiday season, you’ll just have to select a new image and update the DNS TXT record.


3. Determine how to measure the impact of BIMI implementation once you have set it up

  • It’s essential to track the effects of your BIMI implementation. You can have before and after BIMI implementation metrics to measure this. Doing so, you will know if your clicks increased and compare this with your generated revenue.


BIMI Implementation

In order to implement a BIMI record, you have to create a DNS TXT record that your domain will use.
Use the following steps in order to achieve this:

Select your domain and selector

  1. When you check your marketing emails, you will find a field labeled “From:” This field points to the domain where you have to create a DNS TXT record.
  2. You will need to create a selector name. This is the name that the mailbox provider will use to retrieve the BIMI record. Many people use “default” as selector’s name since it is easier to implement as you don’t have to insert the BIMI-selector header.
  3. You can use the default name if you are testing how BIMI works, or are encountering problems adding the BIMI-selector header to your emails. The default setting is also suitable if you have or use a single brand for your company or organization.
  4. If you want to implement BIMI records for multiple brands, then you have to choose selectors’ names to have control over how the different logos will appear. It is advisable to use a short selector name, and also one that relates to your business.


Create a DNS TXT for the domain you selected above

In case you decide to implement the BIMI record yourself, you need to follow the instructions provided by your email provider or domain hosting service. Also, make sure to include all the required tags in the record and use the correct syntax in the implementation.
  1. Using your selector name, you can follow the following format: TXT “v=BIMI1; l=;a=;”

    Example of a BIMI TXT Record with a selector
    The example below shows an existing DMARC TXT record supplemented with the BIMI TXT Record with a selector for the domain: The location of the logo in this example is: Default Bimi record

  2. Using a default selector name, you can follow the following format: TXT “v=BIMI1; l=;a=self;”

    Example of a default BIMI TXT Record
    The example below shows an existing DMARC TXT record supplemented with the (default) BIMI TXT Record for the domain: The location of the logo in this example is: Default Bimi record


How to publish the BIMI selector

When using the default selector name, you don’t need to include the BIMI selector header in the emails. The header is, however, necessary if you are using a unique selector name.
You will need to contact your DNS manager in order to publish the BIMI selector. Once again, ensure that you are using the correct syntax. The s=value in the header should match the set selector name in your DNS TXT record. Otherwise, your logo will not be displayed.
Please note that the example below is for illustrative purposes only. Be sure to use your own selector name or your logo will not display.

Components of a BIMI-Selector header

  • Header name: The value is always BIMI-Selector. (Required)
  • v = Version: the value is always BIMI1. (Required)
  • s = Selector name: the value is the same what you have chosen earlier as your selector name. (Required)

The selector name listed in the BIMI-Selector header must match the selector name as you have configured in the BIMI DNS record exactly.

The correct syntax for the BIMI-Selector header
: v=; s=;

For example:
BIMI-Selector: v=BIMI1; s=januari2020;


Once you have followed the steps of BIMI implementation, your organization or company will get more visibility and attract more clicks from your prospective and existing customers. All your emails will have your logo alongside them and will stand out in the receiver’s inbox. This enhances customer trust and increases the chances that they open and read your company emails.