| Platform SDK: Exchange Server | 
The PR_DEFERRED_SEND_NUMBER property contains the units of time that the system waits before sending a message.
| Header file: | EDKMDB.H | 
| Applies to: | Message objects (information store objects) | 
| Identifier: | 0x3feb | 
| Property type: | PT_LONG | 
| Access: | Read/write | 
The PR_DEFERRED_SEND_NUMBER property is used with the PR_DEFERRED_SEND_UNITS property to determine the length of time the system waits before sending a message.