A mail information display method and apparatus, an electronic device, and a storage medium are provided. The method includes: displaying mail sharing information corresponding to a currently shared target mail in a target instant messaging IM dialog window of an IM client; and in response to detecting a mail viewing operation triggered by a user for the mail sharing information, creating a mail display window, and displaying mail information of the target mail in the mail display window, wherein the mail display window and the target IM dialog window are displayed on a same screen.