 This included many improvements, mostly to the Messenger e-mail client, which now also took on the features of Collabra.However, some of the less popular components, such as Netcaster, were dropped.A feature called "Roaming Profiles" was added in version 4.5 that synchronized a user's bookmarks, address book and preferences with a remote server, so that a user's home and work browsers could have the same bookmarks.