Huawei Mate 8 - Manual (Page 113)

Messaging and email
106
After you remove an email account, you will no longer be able to send or receive emails
using that account.
Personalizing your email account
You can display contact pictures and set the inbox update frequency, choose what to
display after deleting an email, change your signature, and change email notification
tones.
1
Open Email.
2
In your Inbox, touch > Settings, and then choose the desired settings.