Out of the box, BizTalk provides several pipeline components to be used when creating a pipeline. These components are available inside the Visual Studio Toolbox. Two of these components are called the Multipurpose Internet Mail Extensions/Secure Multipurpose Internet Mail Extensions (MIME/SMIME) Decoder pipeline component and Encoder pipeline component.
The first component can be used for decoding and decrypting (MIME/SMIME) encoded messages and verifying digital signatures of signed messages. The second is used to encode and encrypt outgoing messages and sign these messages. These pipeline components can be inserted in either the encoding or the decoding stage of a pipeline and aid in encoding or decoding a message: