I want to delete all mail from my gmail account. How can I do this all at once? I have over 3000 emails to delete. Any suggestions?
Go to the all mail label by selecting all mail from the list on the left side of the page. If all mail isn't there it can be added under gear/settings/labels.
On the left side of the list are all the check boxes.
At the top of the list is a master checkbox pull down the list and select ALL
That will select every email on the page.
You will also notice a message on the top of the list "All 100 conversations on this page are selected. Select all 3,456 conversations in All Mail"
Click on the 2nd half of the message
Click the delete button at the top of the list of messages.