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Why is DigiCert the right choice for a Verified Mark Certificate?

DigiCert was the first digital trust provider ever accredited under the BIMI standard and is recognized by every major email client that supports BIMI. Their validation process follows Extended Validation (EV) standards, giving your VMC the highest level of identity assurance. DigiCert VMCs are supported by Gmail, Yahoo Mail, Apple Mail, Fastmail, Zoho Mail, and more.

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What is the difference between a VMC and a CMC?

A Verified Mark Certificate (VMC) requires a registered trademark (or qualifying government seal) and enables the Gmail blue authenticated checkmark in addition to logo display. A Common Mark Certificate (CMC) does not require a registered trademark; your logo must only be in documented prior use for 12+ months, but it does not unlock the Gmail blue checkmark. Both certificates require DMARC enforcement, DKIM, and SPF, and both display your logo in BIMI-supporting inboxes.

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Which Email Providers Display VMC Logos?

BIMI and Verified Mark Certificates are supported by all major email clients. The following inbox providers currently display logos for senders with a valid VMC or CMC and BIMI record:

  • Gmail — displays logo + blue authenticated checkmark (VMC only for blue checkmark)
  • Yahoo Mail — displays logo for authenticated senders
  • Apple Mail — displays logo for authenticated senders
  • Fastmail — displays logo for authenticated senders
  • Zoho Mail — requires VMC for logo display
  • La Poste — BIMI-participating provider
  • au.com — BIMI-participating provider

The list of participating providers continues to grow as BIMI adoption increases. Gmail’s requirement for a VMC to show the blue checkmark has been a key driver of VMC adoption among enterprise senders.

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VMC Cost — What Does a Verified Mark Certificate Cost?

A DigiCert Verified Mark Certificate through SSL Dragon starts at $1,249/year for a 1-year term, dropping to $1,049/year on a 3-year subscription. A DigiCert Common Mark Certificate starts at $949/year (1 year) or $799/year (3 years).

Compared to buying directly from DigiCert, purchasing through an authorized partner like SSL Dragon offers competitive pricing on the same genuine certificate with the same DigiCert validation and issuance.

One VMC is required per unique logo and per unique base domain. If your organization sends email from multiple domains using the same trademarked logo, you’ll need a separate VMC for each domain. Both VMC and CMC certificates have a maximum validity period of 397 days, identical to TLS/SSL certificates. You can buy VMC as multi-year subscriptions to lock in a lower annual rate.

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How is organization validation for Mark Certificates performed?

The validation process is similar to EV SSL certificates and includes:

  • Verification of business registration documents
  • Confirmation of legal entity status
  • Identity verification via video call or notarized ID
  • Domain ownership verification
  • For VMC: Trademark verification with recognized IP offices (USPTO, EUIPO, WIPO)
  • For CMC: Proof of logo use for 12+ months

The entire process typically takes 7-14 days for VMC or 5-10 days for CMC.

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What format does my logo need to be for BIMI?

Your logo must be in SVG Tiny PS (SVG Tiny 1.2 Portable/Secure) format with:

  • Square aspect ratio (e.g., 600×600 pixels)
  • File size under 24KB
  • Solid background color
  • No external links, scripts, or embedded fonts
  • Centered logo within the square

You may need a designer or SVG conversion tool to meet these BIMI specifications.

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Which email providers support BIMI and display Mark Certificate logos?

Major BIMI-participating mailbox providers include:

  • Gmail (also displays blue checkmark for VMC)
  • Yahoo Mail
  • Apple Mail
  • Fastmail
  • Zoho Mail
  • La Poste
  • au.com

The list is growing as more email clients adopt BIMI standards.

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What’s the difference between SPF, DKIM, and DMARC?

These are email authentication protocols that work together:

  • SPF (Sender Policy Framework): Specifies which mail servers can send emails from your domain
  • DKIM (DomainKeys Identified Mail): Adds a digital signature to verify emails haven’t been tampered with
  • DMARC (Domain-based Message Authentication, Reporting & Conformance): Enforces policies on how to handle emails that fail SPF or DKIM checks

All three are required for BIMI and Mark Certificates to function.

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What is BIMI and how does it relate to Mark Certificates?

BIMI (Brand Indicators for Message Identification) is an email authentication standard that allows organizations to display their logo in recipients’ inboxes. Mark Certificates (VMC or CMC) are required to prove you legally own the logo you want to display. BIMI won’t work without proper email authentication (SPF, DKIM, DMARC) and a valid Mark Certificate.

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Can I Use a Verified Mark Certificate without a Trademark?

No, VMCs require a trademarked logo or a qualifying government seal. If you don’t have either, the CMC is the alternative.

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