For a long time I have been waiting for a company to create an app that merges multiple email accounts. The Gmail app came close but the syncing of Outlook based accounts was a hassle.
This year my email dream came true through Sunrise. The email and desktop based app is fantastic. Not only does it merge all your email accounts but it also can sync with sports schedules, weather, and other global events. To all the educators reading this app I strongly recommend it as an email management tool. You can sync your work emails and personal emails, and then color code them so you have a well-organized, one stop shop for all email related queries.