In the transmission of an email message from one ADMD to another, this is the organization receiving the message on behalf of the intended recipient or end user. The Message Receiver may do this because the intended recipient utilizes mailbox services offered by the Message Receiver (Comcast, GMail, etc), or because they are an employee or member of the organization and have therefore been provided with a mailbox.

In the transmission of an email message from one ADMD to another, this is the organization receiving the message on behalf of the intended recipient or end user. The Message Receiver may do this because the intended recipient utilizes mailbox services offered by the Message Receiver (Comcast, GMail, etc), or because they are an employee or member of the organization and have therefore been provided with a mailbox.