Yahoo! Messenger or Instant Messenger, Yahoo! (ymsgr), the software that it user with another user, can be found in every corner of the world for online conversation. Unlike email, etc. the conversations in this software, immediately after sending the can be displayed.

usually, the company Yahoo about the changes, in writing, the new software, something does not publish. 5 August 2016, the company, Yahoo officially announced of the program announced, and there's always the app unusable.