Gmail app for Android might soon gain a ‘Select all’ option. With this feature, users will likely be able to select multiple emails.

So, you've let your Gmail inbox get a little cluttered. If you're sick of looking at 14,160 unread emails, just delete them. Here's how.

Select the "Signature" option in "Settings" to type a personalized signature for all sent messages. Select which labels you want to sync from your Gmail account.