Abstract: An information exchange method, a client, and an apparatus where the method includes obtaining, by an email client, a receiver email address and email description information of a current email; determining, by the email client, whether an instant messaging account bound to the receiver email address satisfies a pre-stored session initiation condition; and if the instant messaging account bound to the receiver email address satisfies the session initiation condition, sending, by the email client, the receiver email address and the email description information to an instant messaging client in to which a sender instant messaging account is logged, so that the instant messaging client requests an instant messaging server to create a session including the sender instant messaging account and a receiver instant messaging account, and the instant messaging client sends, in the session, an instant messaging message including the email description information.