Turn on or turn off read receipts
Before you begin: Depending on your wireless service provider or administrator, you might not be able to perform this task,
or some of the options might not appear.
On the home screen, click the Messages icon.
key > Options > Email Preferences.
If the Message Services field appears, set this field to the appropriate email account.
To set whether your BlackBerry smartphone sends a read receipt or delivery receipt when a sender requests it,
change the Send Read Receipts field.
key > Save.