Gmail Lets Users Combine Inboxes in Android Update

Android users will no longer have to trawl through multiple email accounts to keep track of all their Gmail messages.

Gmail - Wikipedia

Add multiple accounts in Outlook app for Android and iPhone

How to Use Multiple Gmail Inboxes - A Guide

Too many Gmail accounts? Try this desktop app to bring them all together - CNET

Delegate access to your Gmail account

The 10 Best Email Apps for Android: 2023's Top Picks

Gmail app on Android might soon get 'Select All' option

Merging Multiple Gmail Accounts in Just One Inbox

How to create and use Collaborative Inbox in Gmail - Streak

How to Manage Multiple Google Accounts - Blog - Shift

Setup Guide: How to Create a Shared Inbox in Gmail

Inbox for Android now has an 'all inboxes' view for keeping tabs on multiple accounts