Link2mail provides an online solution configured within Linktivity and then writes the email History to Act! from a single Windows utility installed on your network. The connections to the database are the Act! Web API or K-API, and wholly configured online. All the global settings, users, and user preferences are configured within Link2mail, and then synced to the Windows utility. The advantage of this setup is simple. All the accounts are managed in one place without ever having to go to the Windows server to configure anything. Just set it and forget it.
Moreover, after the Windows utility is deployed once, there is nothing more to install anywhere. No plugins, no having to touch every user's computer, nothing. The first Linktivity user sets up their account, the global preferences, and then the rest of the users. There is nothing to teach your users because everything works in the background.