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

Quick Links Delete Emails in Gmail Using "Select All" Use Search, Labels, and More to Mass Delete How to Delete Archived Emails in Gmail Mass-Deleting Emails on the Gmail Mobile App Go One Further ...

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.