Method and device for sharing data through emails

The invention provides a method and a device for sharing data through emails. The method for sharing the data in a member group through the emails comprises the following steps: providing an address of a communication mailbox for communication; acquiring an access token for accessing a data mailbox for storing the data in the group, wherein the data is stored in the data mailbox in a data mail mode, and has an index of an index mail containing store path information of a data mail; adding the acquired access token into an access list; acquiring the index mail; and accessing the data mail by utilizing the access token stored in the access list and the store path information of the data mail contained in the index mail.