Chilkat S/MIME 2.6.0

NOTE: The Chilkat Mail components and libraries (Mail, WebMail, Email.NET, etc.) are fully capable of sending and receiving S/MIME secure emails standalone. Chilkat S/MIME is a component that provides general purpose MIME and S/MIME capaibility.
Royalty free licensing. (All Chilkat components are royalty free)
Verify signed messages.
Decrypt messages.
Encrypt a message.
Add one or more detached digital signatures to a message.
Convert to a signed (non-detached signature) message.
Unwrap a message to get the message as it was before encryption and signatures were applied.
Access to certificates used for signing and encryption.
Drill down into arbitrarily complex multipart messages.
Create multipart/signed messages.
Create multipart/related messages.
Create multipart/mixed messages.
Full control over content type.
Full control over content disposition and encoding.
Ability to add custom header fields.
Conversion to and from XML.
Support for HTML, and XML.
Support for image files (JPG, GIF, etc.)
Automatic Base64 encoding/decoding.
Automatic B and Q encoding/decoding based on charsets and content.
File attachments.