Related Clues:

• Letters often seen after @
• It had its second IPO in '99
• 'You've got mail' co
• Co. that used to mail out tons of CDs
• Giant in a 2000 merger
• 2011 Huffington Post acquirer
• Internet company with a 2009 IPO
• WWW giant
• Co. that purchased the Huffington Post in 2011
• ''You've got mail'' co
• CD mailer of the early 2000s
• I.S.P. giant
• Chat room inits
• "You've got mail!" letters
• Passé email address