Stop contact suggestions in messages
    When you compose an email in the 
BlackBerry Hub+
 Contacts, contacts that you sent messages to recently appear as suggested recipients under the To
 field. - In the Contacts app, tap . In the Generalsettings section, tapContacts management>Manage suggested recipients. . In the Generalsettings section, tapContacts management>Manage suggested recipients.
- Tap the contact that you don't want to appear as a suggested email recipient.
To view a list of contacts that you removed from being suggested, tap 
Removed from Inbox App
. To allow these contacts to be suggested again, tap them.