How to delete Emails from Mailbox in Samsung Galaxy S6 Edge+(SM-G928G)?

CLICK HERE to know Select all option on Email Inbox in Samsung Galaxy S6 Edge+ ( SM-G928G ).  

a). Tap on Apps icon as shown below.

b). Now select Email icon and tap on it.

c). Select MORE option from top left screen and tap on it.

d). Select Edit.

e). Tap on the check box before Select Emails option and check all the emails on the page list.

f). Now tap on DELETE after selecting the mails to erase from the Mailbox.