How to send authorization codes via messengers?

Question

Messengers

There is an application. A person is registered and you need to confirm his profile. Now this is done via SMS. The user enters a phone number and waits for SMS. This is a very expensive process. Each SMS is 2.5 rubles.

Now, of course, you can make calls to confirm and ask to enter the last 4-6 digits of the incoming number.

How to do it through messengers? The user indicates which messenger he uses and we send a confirmation code there.

Is there such an opportunity for WhatsApp and Telegram? If you need to do thousands of profile activations per day.

Answer 1

How to do it through messengers? The user indicates which messenger he uses and we send a confirmation code there.
Is there such an opportunity for WhatsApp and Telegram? If you need to do thousands of profile activations per day.

I won’t say anything about the vatsap, but in the cart it can be done through bots - just give out an individual number to the user, which he will give to the bot, and then you will know where to send the codes.
Limits - thousands per day are definitely possible. Thousands per second - you will run into a limit, but you can individually ask to increase the limits.