[MS-ASCMD]: ActiveSync Command Reference Protocol Specification

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When the server receives this Sync request and determines that it contains no changes, it caches
the request for future use. The server then responds to the Sync request with an empty Sync
response when no changes or errors have occurred on the server. The empty Sync response is as
follows:
HTTP/1.1 200 OK
Date: Fri, 10 Apr 2009 20:32:39 GMT
Content-Length: 0
When the client receives the empty Sync response, it can in turn send an empty Sync request if
there are no pending changes. The empty Sync request is as follows:
POST /Microsoft-Server-
ActiveSyncCmd=Sync&User=DeviceUser&DeviceId=v140Device&DeviceType=SmartPhone HTTP/1.1
Content-Type: application/vnd.ms-sync.wbxml
MS-ASProtocolVersion: 14.0
X-MS-PolicyKey: 2401271238
User-Agent: ASOM
Host: contoso.com
The exchange of the empty Sync requests and responses continues until a change is detected on
either the client or server, at which time a Sync request or response with an XML payload is sent.
4.6 Sending E-Mail Messages by Using the SendMail Command
The following sections show how to send e-mail messages by using the SendMail command
(section 2.2.2.15).
4.6.1 Request
The following example shows the SendMail command request (section 2.2.2.15.1) sent from the
client to the server to send an e-mail message. The composemail:ClientId element (section
2.2.3.27.1) represents the unique message ID of the message to be sent. The
composemail:SaveInSentItems element (section 2.2.3.134) indicates to the server that a copy
of the message is placed in the Sent Items folder, and the composemail:Mime element (section
2.2.3.93) contains the message contents.
633916348086136194
From: testuser1
To: testuser2
Cc:
[MS-ASCMD] — v20110315
ActiveSync Command Reference Protocol Specification
Copyright © 2011 Microsoft Corporation.
Release: Tuesday, March 15, 2011
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