An update to the Gmail app for Android has finally brought together all the emails from your various accounts into the one inbox, making it a lot easier to view and manage your messages. The feature is available as a self-explanatory "All Inboxes" option accessible through the Gmail side panel.
Previously, users who had more than one email account linked to the Gmail app had to switch between inboxes to see emails from each account. While it will still be possible to sort emails by account in the Gmail app, the All Inboxes option gives you a much better overview of your email account inboxes on the one screen.
Google has also implemented email conversations for accounts other than Gmail. This means that if you've linked an Outlook.com, Yahoo or other IMAP/POP email account, you'll see emails and subsequent replies stacked as one conversation, exactly like you get with your Gmail emails.
The update also brings smarter and better auto-complete, which is said to make searching for emails much faster, alongside a number of other minor tweaks.
Android users should see the updated Gmail app hit your devices shortly, assuming you've got auto-update enabled. The improvements aren't quite ready for users of the iOS Gmail app, though we'd expect that it will eventually be updated with the same features as the Android version.