Prevent the BlackBerry Enterprise Server from synchronizing existing email messages to a BlackBerry device
- In the BlackBerry Administration Service, on the Servers and components menu, expand BlackBerry Solution topology > BlackBerry Domain > Component view > Email.
- Click the instance that you want to change.
- Click Edit instance.
- On the Messaging tab, in the Message Prepopulation Settings section, perform the following actions:
- In the Prepopulation By Message Age field, type 0.
- In the Prepopulation By Message Count field, type 0.
- Click Save all.