There are two types of e-mail messages: forms and text messages. Text messages use a single text body to pass information while e-mail forms use one or more fields.
Delivery mode that provides faster delivery. The message stays in memory (RAM) until it can be delivered and is not recovered if the computer is rebooted.
Used when the receiving application needs information in the certificate to verify who sent a message.
External certificates contain information about the certificate authority, the certified user, the validity period of the certificate, the public key of the certified user, and the certificate authority's signature.
For more information see internal certificate.
Transaction called when the transaction must work with more than one resource manager (more than simply sending or retrieving an MSMQ message ). In this case, the application must ask MS DTC for a transaction object and reference that object each time it sends a message, retrieves a message, or executes an action of another resource manager.