Ever since I updated to Lollipop, I have been getting what seemed at first like random toast notifications saying "SendinMessage". After carefully watching these popups, I noticed they always appeared whenever the phone connected to the watch or the phone connected to a data connection (be it wifi or 3G) even when Bluetooth is off and the watch is not connected.
I thought it was something weird going on with the Z3 Lollipop update. Now I was installing apps on a new Galaxy S6, and once I installed Android Wear, every time I connected to data it popped up this "SendinMessage" toast notification. And I haven't even paired the watch yet. I verified this by removing Android Wear and installing it a couple of times to make sure they were related.
Here's a screenshot of the popup. Do you have any insight on what's going on?