Star emails in Yahoo Mail app

Starring emails lets you keep track of important messages in one place. To star a message, just tap the star icon next to your message in your inbox. The ability to star messages should be on as a default setting, however, you may need to enable it if you're not seeing a grey star icon next to your messages.

1. Tap the Profile icon.
2. Tap the Settings icon .
3. Toggle on or off "Show stars."