Use gmail to setup an email whom sends your quotes. Replace project [email protected] and [email protected] with yours.
You need to turn off "Less secure app" option on your gmail account. Recommended is to also use two step authentication and create an app specific password for this. Then add that password to the readClippings.py.
Grab your My Clippings.txt file from your kindle. Clone this project and change this My Clippings.txt file for yours.
Add to https://www.pythonanywhere.com/ โป๏ธ
Use a site to make your code run periodically