Prevent the BlackBerry Enterprise Server from synchronizing existing email messages to a BlackBerry device

  1. In the BlackBerry Administration Service, on the Servers and components menu, expand BlackBerry Solution topology > BlackBerry Domain > Component view > Email.
  2. Click the instance that you want to change.
  3. Click Edit instance.
  4. 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.
  5. Click Save all.