I set up a mobile QQ mailbox. Why can't I send a message?

Settings-Email, Address Book, Calendar-Add Account-Select Email Pusher-

Name: Random

Address: fill in your email address (this article takes QQ mailbox as an example)

Password: Yes, the email password (if it is QQ and a separate email password is filled in, the password here is filled in as your separate password instead of QQ password).

Description: Fill in or not.

-Storage-

Add complete

If you can't finish it, you must enter the mailbox to set it. popt and imap will be turned on in the account setting. Open the mailbox-Settings-Account -POP3/IMAP/SMTP service, enter V in the two boxes, and save. On the mobile phone, it is Settings-Email-Add Account.