The new feature, available exclusively on the Yahoo Mail iOS and Android apps, gamifies the process of sorting through new emails.

Enable Sorting by Size If you want to sort your inbox manually: Switch to the “All” tab (Yahoo defaults to “Priority”). Click the slider icon near the top (Preferences).

Yahoo Mail’s free storage limit has been reduced from 1TB to just 20GB for standard accounts, and hitting that cap can stop your email flow cold. Once you’re full, you won’t be able to send ...