How to delete all mail in mail app

To delete all emails in the Mail app on your device, you can follow these steps:

For iOS devices (iPhone, iPad, iPod touch):

1. Open the Mail app.
2. Tap on the "Edit" button in the top-right corner of the screen.
3. Tap on "Select All" at the top of the screen.
4. Tap on the "Trash" button at the bottom of the screen.
5. Confirm that you want to delete all selected messages by tapping "Delete" in the pop-up dialog.

Alternatively, you can also delete all emails by:

1. Opening the Mail app.
2. Tapping on the "Mailboxes" tab at the bottom of the screen.
3. Tapping on the "Edit" button in the top-right corner of the screen.
4. Tapping on "Select All" at the top of the screen.
5. Tapping on the "Delete" button at the bottom of the screen.
6. Confirm that you want to delete all selected messages by tapping "Delete" in the pop-up dialog.

For Android devices:

1. Open the Mail app.
2. Tap on the "Menu" button (usually three vertical dots) in the top-right corner of the screen.
3. Tap on "Select all" or "Select all conversations" (depending on the app version).
4. Tap on the "Delete" button.
5. Confirm that you want to delete all selected messages by tapping "Delete" in the pop-up dialog.

For Outlook app (Windows, macOS, iOS, Android):

1. Open the Outlook app.
2. Go to the "Inbox" folder.
3. Select all emails by pressing Ctrl+A (Windows) or Command+A (macOS) or by tapping and holding on an email and then tapping "Select all" on the context menu.
4. Right-click (Windows) or Control-click (macOS) on the selected emails and choose "Delete" or press the Delete key.
5. Confirm that you want to delete all selected messages by clicking "Yes" in the pop-up dialog.

Note: Before deleting all emails, make sure you have backed up your emails or have a way to recover them in case you need to.