Open Gmail in a web browser
Sign in to your account
Go to the Inbox or any folder you want to clear
Click the checkbox at the top left to select all visible emails
Click the “Select all conversations in this folder” link if it appears
Click the Delete icon
Repeat the process for other folders such as Promotions, Social, Updates, Sent, Spam, and Trash if needed
To delete all mail at once, use the search bar and enter `in:anywhere`
Select all results
Click the Delete icon
Empty the Trash folder to permanently remove the emails
On mobile, open the Gmail app
Select emails manually or use search to filter messages
Tap the Delete icon
Clear Trash if you want permanent deletion