If you don’t regularly check your email throughout the day, the unread badge count on your iPhone or iPad is an indispensable part of your workflow. When it works, that is. If your iOS Mail app is ...

Click to place a check in the box next to the sender of a message while viewing your Yahoo Mail inbox. Click the gear-shaped button above the inbox and select "Mark as Unread." Click to place a check ...

Using a "half swipe" on the Snapchat conversation page, you can preview an unread message without sending a read receipt. To do this, tap the user's avatar and drag it to the right without fully ...

You can mark any message as unread on Signal in the Android and iPhone versions of the secure-messaging app. Signal is available on Android, iPhone and desktop ...