2.2.2.70 Sender

The email2:Sender element is an optional element that indicates the message was not sent from the user identified by the From element (section 2.2.2.36). It is defined as an element in the Email2 namespace.

The value of the Sender element is an e-mail address, as specified in [MS-ASDTYPE] section 2.7.3.

This element is set by the server and is read-only on the client. If the client attempts to change this value, the server returns a Status element ([MS-ASCMD] section 2.2.3.177.17) value of 6 in the Sync command response ([MS-ASCMD] section 2.2.1.21).

If present, the email2:Sender element identifies the user that actually sent the message, and the From element identifies the user on whose behalf the message was sent. Use of the email2:Sender element indicates that the sender of the item had delegate access to the From user's mailbox.

The email2:Sender element is not sent to the client when the email2:Sender element and the From element have the same value, or when the email2:Sender element value is NULL.

Protocol Versions

The following table specifies the protocol versions that support this element. The client indicates the protocol version being used by setting either the MS-ASProtocolVersion header, as specified in [MS-ASHTTP] section 2.2.1.1.2.6, or the Protocol version field, as specified in [MS-ASHTTP] section 2.2.1.1.1.1, in the request.

Protocol version	Element support
2.5
12.0
12.1
14.0	Yes
14.1	Yes
16.0	Yes
16.1	Yes