常见问题

Domain Validation (DV). No business documentation, no waiting period. The CA confirms domain control and issues the certificate automatically. The cheapest SSL certificate in the catalog starts at $7.66/yr.

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Cheap SSL certificates from trusted CAs are available starting at $7.66/yr right here on this page. Browse the product sections above to find the best cheap SSL certificate for your setup, or use the SSL Wizard for a personalized recommendation.

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Yes. All SSL certificates use the same 256-bit encryption standard. The cost difference reflects the validation level (DV, OV, or EV), warranty amount, and Certificate Authority brand. A $7.66 DV certificate encrypts data in transit identically to one costing several hundred dollars. Affordable and low cost options provide the same protection as premium ones.

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You need one VMC per unique base domain and one VMC per unique logo. If you send an email from three domains (example.com, example.net, example.co.uk) using the same trademarked logo, you need three VMCs. If you use two different logos across two domains, you also need two VMCs. Sub-brands or seasonal logo variants may require separate certificates depending on your BIMI configuration.

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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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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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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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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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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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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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