Time Warner switches entire company to AOL, for email.

http://www.nytimes.com/2001/05/16/technology/16AOL.html

May 16, 2001
Workplace: Cultures Clash as AOL Switches to Its E-Mail
By SUSAN STELLIN
he uniting of America Online and Time Warner has caused more than a few changes in corporate culture, but one that has caused particularly loud grumbling among employees involves three words that are usually welcomed by AOL subscribers: "You've Got Mail."

AOL Time Warner is in the process of switching all employees to America Online as their primary corporate e-mail program, and not everyone is happy about the change.