![]() A BIMI-Location header that includes both l and a valuesĭKIM-Signature: v=1 a=rsa-sha256 c=relaxed/relaxed d= īh=bYktD+FKmAvkst9op6KYg+JHRznF/tB4agLqrbfatKo= l=0.The authserv-id value of the first (most recently added) Authentication-Results header.The authserv-id value must have the same organizational domain as either:.An Authentication-Results header with bimi=pass and thority=pass. ![]() The d value must have the same organizational domain (eTLD+1) as the recipient mail server.A DKIM-signature header, where the h value contains all Authentication-Results up to the ones the server inserted.Additionally, Apple Mail clients will not require a DKIM signature in beta releases.Ī valid BIMI-compliant email contains all of the following headers (configured as described): IMPORTANT: Mail providers listed under "Supports BIMI" at are exempt from inserting a DKIM signature until further notice. This additional requirement establishes a basis for Apple Mail clients to trust inserted BIMI headers. The signature must cover an Authentication-Results header (also from the mail provider) including a bimi statement. In addition to the requirements outlined in the BIMI specification, Apple Mail clients require that a DKIM (DomainKeys Identified Mail) signature be inserted by the mail provider. If a mail provider hasn’t performed these actions for a given mail message, that message won’t show an organization’s logo in Apple Mail. Added the required headers vouching for these checks described under “Support Apple Mail clients.”.Verified a BIMI Evidence Document (for example, a VMC trusted by the mail provider).Ensured message and domain compliance according to the BIMI specification.An organization’s logo appears in Apple Mail for a given email message when the mail provider has: It works with VMCs (Verified Mark Certificates) 3, 4 and other forms of BIMI Evidence Documents to verify the ownership and authenticity of a logo and the logo’s connection to that domain.īIMI compliance is managed by the mail provider on the server. BIMI 1, 2 leverages a domain’s deployment of DMARC (Domain-based Message Authentication, Reporting & Conformance) to prevent domain impersonation. OverviewīIMI is designed to ensure that logos are displayed only for messages that properly originate from a sending organization. Get an overview of how BIMI works and learn how to ensure eligible BIMI logos are displayed for Apple Mail clients. Prepare your email server for BIMI support in Apple MailĪpple Mail in macOS Ventura 13, iOS 16, and iPadOS 16, or later supports BIMI (Brand Indicators for Message Identification), an email specification that enables email clients to show brand-controlled logos based on information provided by the corresponding organization.
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