Sending Push Notification To All People Who Have Enabled Notifications For My Progressive Web App
<p>I am in the process of developing a new site and have decided to add progressive web app capabilities to the site. I have set it all up correctly and I can send push notifications to devices with whom I know the endpoint via FCM with a cURL command. </p>

<p>My question is how do you send one to all users who have enabled notifications on my site without knowing a list of all users unique endpoints.   </p>