how to send notifications to multiple users at a time in django?

Question

I am creating a rental website, where users can pay online. I want to inform users to pay the bills monthly once. how can I send the notification to all at once in django?

Answer 1

One example of setting up "poor man's notification system" would consist of creating a UserNotifications database table, containing the userId (fk), a message, a createdate and a readdate bit field.
When the user logs in or hits a page, simply get the unread messages for the user and display them in whatever way you like. You can fine-grain this to your needs with other tables and such. For a non-real-time use case, this might be sufficient.

If you need more real-time bells and whistles and/or want to offload the heavy lifting to an external messaging platform, there are many posts such as this one on here, that can help you on your way.