This article explains why you might sometimes receive what appear to be chat messages in Yahoo Mail.
Limit for conversations . Maximum conversations allowed in Yahoo Messenger. You may have up to 100 separate conversations at the same time.
Facebook has discontinued some of the technology used by products like Yahoo Messenger which allowed features like Facebook chat and status sharing to work outside of Facebook, so those features are no longer available through Yahoo Messenger. Their decision doesn't affect anything else in Yahoo Messenger though, so you can still use it to connect with the rest of your friends, colleagues, and other contacts.
If you have archiving enabled, you can retrieve your Yahoo Messenger conversation history from Yahoo Mail. While it's not possible to directly download your conversations , you can copy and paste them into a text file or Word document. Save your conversation history
If you are signed in to Yahoo Messenger and open your Yahoo Mail account on the same computer, Yahoo Mail will detect that Messenger is running and it will not load the chat module. However, if Yahoo Mail is opened on a different computer, the chat module will still load. Yahoo Mail will then sign you out of the Messenger client.
It is difficult for us at Yahoo to measure what a member might be thinking. If you feel the danger is imminent, please call 911 or notify the nearest Emergency Room . In addition to the resources mentioned above, here is another group that can offer help:
, then Preferences Then, select Conversation History from the left panel and select Do not keep a history of my conversations