Since there was a change in Google’s system of authentication, if your Email Writer for Sony SmartWatch app starts malfunctioning, just reinstall it, and make sure to allow the permissions, as shown on this screen.
Minor fix for the Email Writer for Sony SmartWatch app
Sony Smartwatch 3 built-in GPS and a slick new all-metal design was among the very first group of Android Wear smartwatches to appear in the shops and it’s now very much looking its age.