How to change the mailbox bound by dota2

If it is a national service client, don't enter the game after logging in. Find the settings option, which has the option to change the mailbox. On the steam side, click on the steam in the upper left corner to find the setting options. There is an option to change the e-mail address. If the mailbox does not receive the verification code, it should be stuck. Browser problems are just like mobile phones sometimes can't receive SMS verification codes. Close and reopen it, or wait. D2 was sent by steam from V club, and the email address must be done.