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常见问题

VMC 和 CMC 有什么区别?

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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哪些电子邮件提供商会显示VMC标识?

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 费用 — Verified Mark Certificate 的成本是多少?

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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如何进行标记证书的组织验证?

验证过程与 EV SSL 证书类似,包括

  • 核实商业注册文件
  • 确认法律实体地位
  • 通过视频通话或公证身份证验证身份
  • 域名所有权验证
  • 对于 VMC:与公认的知识产权局(美国专利商标局、欧盟知识产权局、世界知识产权组织)进行商标验证
  • 对于 CMC:12 个月以上的徽标使用证明

整个过程通常需要 7-14 天(VMC)或 5-10 天(CMC)。

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BIMI 要求我的徽标采用什么格式?

您的徽标必须是 SVG Tiny PS(SVG Tiny 1.2 Portable/Secure)格式,并附带:

  • 正方形长宽比(如 600×600 像素)
  • 文件大小低于 24KB
  • 纯色背景
  • 无外部链接、脚本或嵌入式字体
  • 正方形内居中的徽标

您可能需要一个设计器或 SVG 转换工具来满足这些 BIMI 规范。

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哪些电子邮件提供商支持 BIMI 并显示标记证书徽标?

参与 BIMI 的主要邮箱提供商包括

  • Gmail(也显示 VMC 的蓝色复选标记)
  • 雅虎邮箱
  • 苹果邮件
  • 快速邮件
  • Zoho 邮件
  • 邮报
  • au.com

随着越来越多的电子邮件客户端采用 BIMI 标准,这份名单也在不断扩大。

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SPF、DKIM 和 DMARC 之间有什么区别?

这些都是可协同工作的电子邮件身份验证协议:

  • SPF(发件人策略框架):指定哪些邮件服务器可以从您的域名发送电子邮件
  • DKIM(域名密钥识别邮件):添加数字签名,以验证电子邮件未被篡改
  • DMARC(基于域的消息验证、报告和一致性):执行有关如何处理 SPF 或 DKIM 检查失败的电子邮件的政策

要使 BIMI 和标记证书发挥作用,三者缺一不可。

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什么是 BIMI,它与马克证书有什么关系?

BIMI(信息识别品牌标识)是一种电子邮件验证标准,允许企业在收件人的收件箱中显示自己的徽标。需要提供徽标证书(VMC 或 CMC),以证明您合法拥有要显示的徽标。如果没有适当的电子邮件验证(SPF、DKIM、DMARC)和有效的徽标证书,BIMI 将无法工作。

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没有商标也能使用验证商标证书吗?

不,VMC 需要商标标识。如果您没有,则可选择 CMC。

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获得马克证书需要多长时间?

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