If you really have to choose from one of these vendors as opposed to building your own system, you've got to think how people will be using the services. Ever try to get Hotmail to work with Evolution on Linux. That's a pain and I'm sure there are more than a couple people who would like to use Thunderbird or some other program instead of opening a web browser all of the time. Go with Google.
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If you really have to choose from one of these vendors as opposed to building your own system, you've got to think how people will be using the services. Ever try to get Hotmail to work with Evolution on Linux. That's a pain and I'm sure there are more than a couple people who would like to use Thunderbird or some other program instead of opening a web browser all of the time. Go with Google.