Millions of people keep in touch with friends and family from anywhere in the world using Yahoo Mail. They seldom encounter any problems in operating the Web-based email program. However, some users complain their sessions expire unexpectedly. The system logs users out automatically when a user-designated time period expires. This is particularly inconvenient when you are in a hurry to read or write email. Learn how to modify the expiration time to control how quickly your Yahoo Mail sessions expire. Writer Bio
