S/MIME Library
A rock-solid component library for secure Email communications via S/MIME encryption and digital certificates. Sign and encrypt files, emails, and even newsgroup postings using X.509 digital certificates.
DownloadThe Latest IPWorks S/MIME Is Now Available! The most recent version of IPWorks S/MIME features a modernized and streamlined experience, including async and cross-platform support in .NET [learn more].

Secure Email Components
IPWorks S/MIME is a comprehensive suite of components for Email encryption and document security. IPWorks S/MIME implements the S/MIME standard for encryption and decryption using Public Key Cryptography Standards (PKCS).
Complete S/MIME Solution
S/MIME enabled components for - SMTP, POP, IMAP, as well as Certificate Creation & Management, much more!
X.509 Certificate Creation
Become your own certificate authority. Advanced components for digital certificate creation, validation, and management.
Strong Encryption
Robust enterprise-class security with industry standard encryption using S/MIME and Digital Certificates.
Uniform & Extensible Design
Very easy to use, with a uniform, intuitive, and extensible design. Common component interfaces across platforms and technologies.
Fully Integrated Components
Native software components for any supported development technology - with no dependencies on external libraries.
Blazing Fast Performance
Based on an optimized asynchronous socket architecture that has been actively refined for over three decades.
Red Carpet Vol. 1 2023 Now Available
Cloud SMS Beta, IPWorks VoIP Beta, .NET 7, PKI Proxy and more
New and updated Red Carpet Subscription toolkits and products are now available. We are introducing Cloud SMS, IPWorks VoIP, and PKI Proxy. FIPS 140-2 compliance has been added to S3 Drive, SFTP Drive, and SFTP Server. New JAdES components and .NET MAUI support have been added to SecureBlackBox. All .NET editions now support .NET 7.
IPWorks S/MIME is available as part of the Red Carpet Subscription. Download IPWorks S/MIME or read the update highlights.
Product Features
IPWorks S/MIME includes a generic S/MIME component as well as S/MIME enabled versions of the IPWorks POP3, IMAP, SMTP, FileMailer and HTMLMailer components. Digital certificate creation, signing, and management features have also been included.
- Support for the S/MIME v2 and S/MIME v3 standards for mail and document encryption.
- Encrypt/decrypt, sign, and verify message signatures using S/MIME and digital certificates.
- S/MIME enabled versions of all major Internet mail protocols.
- Easily create HTML emails and include file attachments.
- A complete unified framework with a common, easy-to-learn object model and simplified interfaces enable you to do more.
- Advanced Digital Certificate capabilities allow you to create, sign, and manage X.509 Digital Certificates. Become your own certificate authority.
- FIPS 140-2 compliant cryptography (Windows only)
- Licensed by the US Government for export (ECCN classification)
- Components are thread-safe on critical members.
- Fast, robust, reliable components that consume minimal resources.
- Native development components for all supported platforms and technologies.
- Rigorously tested, rock solid libraries that have undergone hundreds of thousands of hours of testing both internally by our QA team and externally through customer installations.
- Detailed reference documentation, sample applications, fully-indexed help files, and an extensive online knowledge base.
- Backed by multi-tier professional support, including free email support and enterprise-level paid support.
Supported Platforms
.NET
.NET Framework & Cross-platform Components
Based on a 100% C# codebase, with no dependencies on native code. The edition of choice for all .NET applications.
Cross-platform support for Windows, Linux, macOS and anywhere .NET is supported. Due to OS limitiations, not all features are available on all operating systems. Native libraries are also available for individual platforms.
- Fully-managed .NET components written in C#.
- .NET Standard 2.0 and 2.1 support.
- Support for .NET 7, .NET 6, .NET 5, .NET Core 3.1, and earlier.
- Works with Xamarin and MAUI via .NET 6.
- Support for Windows IoT.
- Comprehensive integrated product documentation.
- Seamless integration with Visual Studio.
- Support for .NET Framework 2.0 - 4.8.
- Extensive demo applications written in C#.
Java
Pure Java Classes (Java/J2EE)
Pure Java Classes for Internet Programming. The very same components as in other editions of the product, translated in Pure Java for extreme portability across platforms.
- Pure Java Classes.
- Includes an extensive library of pure Java demo applications.
- J2EE version is optimized for sever side development.
- Seamless integration with popular development environments including JBuilder, Eclipse, and IntelliJ.
- Support for JDK version 1.5 and up.
C++
C++ Class Libraries (Windows / Linux / macOS)
C++ classes packaged in 32-bit & 64-bit Windows DLLs, and C++ libraries that can be compiled against many Unix flavors, including but not limited to Linux, Solaris, macOS, AIX, FreeBSD, etc. The edition of choice for C++ programming on any platform or C++ development technology.
- 32-bit & 64-bit C++ class libraries (Windows DLLs).
- C++ libraries for Unix (Linux, Solaris, FreeBSD, macOS, etc.).
- C++ ARM Support.
- Extensive console demo applications.
- Demo applications and comprehensive documentation.
- Obfuscated source code available with the Red Carpet Subscription.
- Seamless integration with popular development environments including Microsoft Visual C++.
- Dynamic library for macOS development using Swift & Objective-C on Intel and Apple Silicon (ARM64).
macOS
XCFramework for macOS and iOS development
Modern XCFrameworks for building high performance macOS and iOS applications with blazing connectivity capabilities.
- Support for native Swift development (including Swift 5)
- XCFramework packaging for macOS, iOS, iOS simulator, and Catalyst projects
- Full support for Intel and Apple Silicon (ARM64)
- Easy integration in XCode 13+
- Simplified support for Objective-C projects
- Extensive demo applications and comprehensive documentation
Swift
XCFramework for macOS and iOS development
Modern XCFrameworks for building high performance macOS and iOS applications with blazing connectivity capabilities.
- Support for native Swift development (including Swift 5)
- XCFramework packaging for macOS, iOS, iOS simulator, and Catalyst projects
- Full support for Intel and Apple Silicon (ARM64)
- Easy integration in XCode 13+
- Extensive demo applications and comprehensive documentation
JavaScript
Pure JavaScript for Node.js, Electron and other Platforms
Pure JavaScript classes with no additional dependencies. Optimized for use in Node.js and Electron.
- Pure JavaScript classes with no dependencies.
- Support for all major Node.js versions.
- Seamless integration with Visual Studio Code.
- Optimized for performance.
- Comprehensive product documentation with extensive sample applications.
- Seamless integration with Electron.
Delphi
Delphi VCL Components
Native Delphi VCL components with no external dependencies. It features the same trustworthy components that come with other editions, available as native Delphi VCLs for real Delphi performance.
- Native Delphi VCL and FMX components.
- Extensive Delphi demo applications.
- Comprehensive integrated product documentation.
- Support for Lazarus IDE and Free Pascal.
- Support for all Delphi versions between Delphi 6 and RAD Studio 11.
- Support for Windows, Linux and macOS.
C++ Builder
C++ Builder VCL's
Native C++ Builder components, written in C++ and compiled with the C++ Builder compiler for blazing performance. The natural choice for C++ Builder programming.
- Native C++ Builder components.
- Extensive C++ Builder demo applications.
- Comprehensive integrated product documentation.
- x86 and x64 platform support.
- Support for all C++ Builder versions between C++ Builder 2009 and RAD Studio 11.
PHP
Cross-platform PHP Component Libraries
Cross-platform PHP component libraries / extensions for development on Windows, Unix, Linux, macOS, etc.
- 32-bit & 64-bit PHP libraries (Windows DLLs).
- PHP libraries for Unix (Linux, Solaris, FreeBSD, macOS, etc..).
- Support for PHP 7 (Version 7.0, 7.1, 7.2, 7.3, and 7.4).
- Support for PHP 5 (Version 5.2, 5.3, 5.4 and 5.5).
- Seamless integration with popular development environments including Eclipse.
- Demo applications and comprehensive documentation.
- Obfuscated source code available with the Red Carpet Subscription.
- Support for PHP 8.0
Python
Python modules (Windows / Linux / macOS)
Python modules for Windows, Linux, and macOS featuring the same trustworthy components that come with other editions, available for use in Python 3.
- Python modules for Windows, Linux, and macOS.
- Support for Python 3.
- Extensive console demo applications.
- Easy installation using PIP.
- Demo applications and comprehensive documentation.
Android
Pure Java Beans, Optimized for Android
Highly optimized pure JavaBeans for integrating blazing connectivity into Android applications.
- Pure Java Beans Optimized for Android.
- Includes an extensive library of pure Java demo applications.
- Seamless integration with popular development environments including Android Studio.
iOS
XCFramework for iOS development
Modern XCFrameworks for building high performance iOS applications with blazing connectivity capabilities.
- Support for native Swift development (including Swift 5)
- XCFramework packaging for macOS, iOS, iOS simulator, and Catalyst projects
- Full support for Intel and Apple Silicon (ARM64)
- Easy integration in XCode 13+
- Simplified support for Objective-C projects
- Extensive demo applications and comprehensive documentation
Qt
Qt Class Libraries (Windows / Linux / macOS)
High-performance Qt classes packaged in 32-bit & 64-bit Windows DLLs; and C++ libraries that can be compiled against Linux, macOS, FreeBSD, and more. The edition of choice for Qt development on any platform.
- 32-bit & 64-bit C++ class libraries (Windows DLLs).
- C++ Libraries for Unix (Linux, macOS, FreeBSD, etc.).
- Support for Qt 4.8 and Qt 5.
- Seamless integration with Qt Creator.
- Obfuscated source code available with the Red Carpet Subscription.
Linux
C++ Class Libraries (Unix / Linux)
C/C++ libraries that can be compiled against any Linux or Unix OS. The edition of choice for C++ programming on any platform or C++ development technology.
- C/C++ Libraries for Unix (Linux, Solaris, FreeBSD, macOS, etc..).
- Extensive console demo applications.
- Seamless integration with popular development environments including Microsoft Visual C++.
- Compilable source code for compilation on various Unix platforms.
- Framework for macOS & iPhone development using Swift & Objective-C (Cocoa).
- Demo applications and comprehensive documentation.
- Obfuscated source code available with the Red Carpet Subscription.
Components for Secure Email
The following components are included in IPWorks S/MIME. Please note that due to platform limitations, not all components are available in all editions.
Included Demos
The following demos are installed with the product. Please Download the trial to get started.