Leave the phone in the other room and send texts with a full-size keyboard This article describes how to send a text from a computer to a cell phone. The iMessage app on your iPhone or iPad is also ...

To send DMs on Instagram from a computer, head to the Instagram website and click the paper plane icon in the top-right.

You can set up iMessage on your Mac using iCloud, and use it to both send and receive text messages from your Mac desktop or laptop.