Rebex Secure Mail
Email encryption software
Email security software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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$499 per 1 developer
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What is Rebex Secure Mail
Rebex Secure Mail is a Windows-based email encryption and signing tool that integrates with Microsoft Outlook to send and receive S/MIME-secured messages. It targets organizations that need certificate-based email confidentiality and authenticity for regulated or partner communications. The product focuses on client-side encryption using X.509 certificates rather than operating as a cloud email security gateway.
Native S/MIME integration
The product is designed around S/MIME encryption and digital signatures using X.509 certificates. This aligns with organizations that must use standards-based, certificate-backed email security for interoperability with external parties. It supports common enterprise patterns such as encrypting, signing, and validating messages within the mail client workflow.
Outlook-focused user workflow
Rebex Secure Mail integrates with Microsoft Outlook, which can reduce user friction compared with separate portals or external message pickup flows. Users can apply encryption/signing actions in familiar email composition and reading experiences. This approach can be useful when the organization standardizes on Outlook and wants encryption to be part of daily email use.
Client-side control model
Because encryption occurs at the endpoint, message protection is not dependent on a third-party hosted encryption portal for core confidentiality. This can fit environments with strict data-handling requirements or limited tolerance for routing sensitive content through additional cloud services. It also supports direct encrypted email exchange when both parties use compatible S/MIME tooling.
Requires certificate lifecycle management
S/MIME deployments depend on issuing, distributing, renewing, and revoking user certificates. Organizations without an established PKI or certificate management process may face operational overhead and support burden. External recipient interoperability can also require exchanging certificates and handling trust chains correctly.
Limited gateway-style protections
As a client-side encryption tool, it does not inherently provide broad inbound threat filtering such as anti-phishing, malware scanning, URL rewriting, or domain-level policy enforcement that email security gateways typically offer. Organizations often still need separate controls for spam, impersonation, and advanced threat protection. This can increase the number of tools required for a complete email security stack.
Windows/Outlook dependency
The primary integration is with Microsoft Outlook on Windows, which can limit applicability for mixed-device environments or organizations with significant webmail and mobile usage. Users on non-Windows platforms may require alternative methods to encrypt/sign email consistently. This can complicate standardization across the workforce.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Rebex Mail Pack (formerly "Rebex Secure Mail") | $499 per 1 developer (one-time purchase) | Includes IMAP, POP3, SMTP, EWS, MSG, MS Graph, MIME, S/MIME libraries; includes 12 months of updates & support. (See Rebex Mail Pack product page and shop.) |
| Mail Pack renewal (Support Contract) | $249 per 1 developer (renewal) | Renewal price to continue receiving updates and priority support after the first 12 months. |
| Individual mail libraries (examples) | SMTP: $199; IMAP: $299; POP3: $299; EWS: $299; MSG: $299; Graph: $299; Security: $199 | Individual .NET libraries sold per developer as alternatives to the Mail Pack; each includes 12 months updates/support. (Prices per 1 developer.) |
| Rebex Total Pack (bundle) | $1,499 per 1 developer | All Rebex .NET libraries bundled together. |
Notes: Volume discounts available (2–4 licenses: 10%; 5–9: 15%; 10–24: 20%). Prices and "Prices per 1 developer" statements are taken from Rebex official shop/product pages and are valid as listed on those pages (dates on pages vary).
