Managing multiple email inboxes iPhone, iPad
By default the Mail app will show all mail inboxes with the “All Inboxes” mailbox, and the email app will also automatically check for new emails from all setup accounts and email addresses. You can also choose to show only specific email inboxes or toggle into those individually if desired:
Open the “Mail” app and tap the “Mailboxes” button in the upper left corner
Choose the Email inbox to show email messages for, or choose “All Inboxes” to show emails for all email accounts setup on the device
Personally I prefer the universal all mail inbox approach so that all emails to all email accounts are visible on the same screen, but I use this iOS tip to quickly show only unread emails to filter and help manage multiple inboxes and email accounts.
This obviously focuses on iPhone and iPad, but for those with desktop computers you can also add new email accounts to the Mac just as easily.
Finally, it’s worth mentioning another strategy for managing multiple email accounts on iPhone and iPad: using different email apps. This is possible with Gmail, Yahoo, and many popular email services as well, which have their own individual email apps available from the App Store as third party downloads. The benefit to that approach is that each email address gets silo’d into it’s own app, which can make it easier for some users to manage.