How to implement a notification sending service?

Question

Python

There is an api server written in flask. It should send notifications to users at a certain point in time. The time is entered by the user himself, the notifications themselves can be of a different plan (sms, email, browser) What is the best architecture to choose? What technologies?

Answer 1

For scheduled message sending time:
- for SMS - use of SMS gates
- for mail - SMTP server
- for browser - use of push messages