MSN Messenger built-in as the default messenger and Yahoo! Express and Quick Buddy were similar to MSN Web Messenger and Yahoo! Yahoo provided Internet communication services such as Yahoo Messenger and Yahoo Mail. Others are used for entertainment, such as SmarterChild on AOL Instant Messenger and MSN Messenger. Messenger and Verizon Media's AOL Instant Messenger. Version 6.0 of MSN Messenger was released July 17, 2003. ICQ is a cross-platform messenger and VoIP client. AOL Instant Messenger collapsed for 40 minutes. Facebook said they attempted contact via email, Twitter, phone, and Facebook Messenger. CO acts as a cellular messenger and functions in vasodilation. Messenger and Windows Live Messenger ceased to exist. Some types of messenger bags are called carryalls. I am the servant of God and the brother of the Messenger of God. Both airlines previously launched customer services on the Facebook Messenger platform. Calcium ion is also the most important second messenger in excitable cell signaling.