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Does it work with shared hosting?
No. Shared hosting lacks the server-level access the agent depends on. It works only where you have root or admin privileges. See “Environments Not Supported” above, or visit our SSL installation guides for manual setup options.
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What servers and operating systems are supported?
Linux (Ubuntu, Debian, CentOS) with Apache or NGINX, and Windows Server (2016–2025) with IIS. Server-level access via SSH or RDP is a prerequisite. Cloud VMs from AWS, Azure, GCP, and DigitalOcean are all compatible. Full details are listed in “Supported Platforms and Servers” above.
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Which SSL certificates are compatible?
The tool supports single-domain and wildcard DV certificates from RapidSSL and GeoTrust. SSL Dragon offers four bundles: RapidSSL Standard + AutoInstall, RapidSSL Wildcard + AutoInstall, GeoTrust QuickSSL Premium + AutoInstall, and GeoTrust QuickSSL Premium Wildcard + AutoInstall.
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How AutoInstall SSL™ Works
Install the agent with one terminal command, run the certificate install command with your token, and you’re done. The full four-step walkthrough is in “How AutoInstall SSL™ Works” above.
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What is AutoInstall SSL™?
A server agent that automates your entire SSL certificate lifecycle. You set it up once, and it takes care of every step from there. At SSL Dragon, it is sold as a bundle with domain validated (DV) certificates from RapidSSL or GeoTrust.
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Are Free S/MIME Certificates Worth It?
Free certificates from some CAs offer basic encryption and signing, but they’re limited to mailbox validation, include no vendor support, and cannot display your organization’s identity. Paid email certificates from Sectigo or DigiCert add support, organization or sponsor validation, document signing capabilities, and multi-year coverage.
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How Long Is an S/MIME Certificate Valid?
SSL Dragon’s email signing certificates are valid for up to 2 years. Under the CA/Browser Forum’s S/MIME Baseline Requirements, Strict and Multipurpose certificate profiles have a maximum validity of 825 days.
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Which Email Clients Support S/MIME?
Most major clients: Microsoft Outlook, Apple Mail, Mozilla Thunderbird, iOS Mail, and Gmail for Google Workspace enterprise accounts. Exchange-based environments support S/MIME natively.
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Do Both Sender and Recipient Need an S/MIME Certificate?
For encryption, yes. Both parties need certificates so they can exchange public keys. For digital signing alone, only the sender needs one. Sending a signed email automatically shares your public key with the recipient, letting them reply with an encrypted message.
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What Is the Difference Between S/MIME and TLS for Email?
TLS encrypts the connection between mail servers during delivery. S/MIME protects the email content itself, regardless of where it’s stored or how many servers it passes through. They solve different problems and work best together: TLS protects transit, while S/MIME keeps messages encrypted at rest on the server.
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