Boy, I totally missed this was possible: [WayBack] How to text from your computer with Android Messages – The Verge
Texting from the web gives you a lot more flexibility in how and where you can continue conversations. Here’s how to set it up and get started.
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- Make sure you’ve got the latest version of Android Messages installed on your phone.
- Go to messages.android.com on the computer or other device you want to text from. You’ll see a big QR code on the right side of this page.
- Open up Android Messages on your smartphone. Tap the icon with three vertical dots at the top and to the far right. You should see a “Messages for web” option inside this menu. If you don’t, just give it some time. Google is rolling out the feature gradually to everyone over the next week.
- Tap “Scan QR code” and point your phone’s camera at the QR code on your other device. In less than a second, your phone will vibrate and the two will be linked up. You should notice your conversations show up in the left column of the browser window. Google says that “conversation threads, contacts, and other settings will be encrypted and cached on your browser.”
Note: this doesn’t mean your actual text conversations are encrypted. They’re not.
–jeroen