How to automatically send a message in messengers about the absence?

Question

Viber

For example, someone sends me a message after business hours. I would like the sender to automatically receive a notification:
Sorry: I'm offline now, I'll reply tomorrow!
Please tell me how to set it up:

1. viber
   
2. Telegram
   

?

Answer 1

Python + library time and api viber and telegram.
Well, some hosting