Do you mean followup emails? Emails sent from an Outlook with BCM,
should get automatically added to the history of a contact that
matches an address in the email's To. And auto-linking has to be
turned on in that BCM.
Followups are like tasks, so if one person set a scheduled task to call
someone in the future, the other person who has access to the shared bcm db
should also see the same followup that was created for a contact or acct.
I just tested where I made a contact and followup on one person's pc,
then I made another followup for the same contact from the other computer.
both computers now show two category symbols so they are syncing that way,
but if I complete the followup on one, nothing changes on the other.