https://www.howtogeek.com/170880/how-to-send-text-messages-from-your-pc-with-your-android-phone/
https://www.pocketables.com/2017/05/how-to-send-text-messages-with-windows-10-android.html
MySMS:
http://support.mysms.com/knowledgebase/topics/68635-general
https://blog.mysms.com/solution-to-the-contact-sync-issue.html
10 apps to send text and SMS from your PC (and other ways too!):
https://www.androidauthority.com/apps-send-text-sms-pc-ways-740669/