It turns out that, for most people (in a corporate setting at least--not sure about college campuses), the problem is that they don't even know how many people they are sending their message to; distribution groups hide how many people are truly on the To line.
We introduced a feature in Exchange 2010 specifically to combat this (as a part of a broader feature called MailTips). In Outlook and OWA, it will warn you as you're composing your message of exactly how many people will get the message.
Blog post introducing the feature (with some really old screenshots):
It turns out that, for most people (in a corporate setting at least--not sure about college campuses), the problem is that they don't even know how many people they are sending their message to; distribution groups hide how many people are truly on the To line.
We introduced a feature in Exchange 2010 specifically to combat this (as a part of a broader feature called MailTips). In Outlook and OWA, it will warn you as you're composing your message of exactly how many people will get the message.
Blog post introducing the feature (with some really old screenshots):
http://blogs.technet.com/b/exchange/archive/2009/04/28/34073...