How to send free sms to phone number using django?

Question

Django

I want to implement authorization in my application via a mobile phone with sending a confirmation code from the user. I understand how to do this, I just don’t know if there are ready-made simple solutions, and ideally also with a free messaging service. From paid solutions, I saw SMS Aero, Twillo, SMS-PROSTO and a few more services. My question is, it would be possible to implement the interaction with the operators yourself, how to do it and will it be possible to do it for free? And, of course, your options for solving this problem will not interfere with me at all. Thank you!

Answer 1

Almost all sms providers provide a very simple api for this, it's one simple http get/post request that can be done in one line of code.
Only cats are born for free, sms cost money, and for free you can either join someone or get a 'discount' for some promotional purposes (some suppliers can give a dozen other sms for free for testing), I have seen suppliers giving free mailings for adding their own advertising in a message (for those who need to send their notifications to themselves, but now this function has been taken over by telegram bots, for example)