How can selectall mail to delete in android

To select all emails to delete in the Gmail app on Android, you can follow these steps:

1. Open the Gmail app on your Android device.
2. Tap on the "Inbox" tab to view your email list.
3. Long-press on the first email in the list to select it.
4. While holding the first email, swipe your finger down the list to select all the emails below it.
5. Alternatively, you can also select all emails by tapping the three vertical dots at the top right corner of the screen and then selecting "Select all conversations" from the dropdown menu.
6. Once all emails are selected, tap the "Trash" icon at the top right corner of the screen to delete all selected emails.

Note: Make sure you have the "Select all conversations" option enabled in your Gmail settings. To do this, go to Settings > General settings > Conversation view > Select all conversations.

Alternatively, you can also use the "Batch delete" feature in the Gmail app to delete multiple emails at once. To do this:

1. Open the Gmail app and go to the "Inbox" tab.
2. Long-press on the first email you want to delete.
3. Tap the "Batch delete" button that appears at the top of the screen.
4. Select the emails you want to delete by tapping on them.
5. Tap the "Delete" button to confirm the deletion.

Note: The "Batch delete" feature is only available in the Gmail app version 9.0 and later.