Telegram how to send message user from group through Api?
<p>On some website (<a href="http://ad1.ru/" rel="nofollow noreferrer">http://ad1.ru/</a>) I had seen possible get personal notify eq :(offer, ticket, discound) on telegram. I can to add only mobile phone (+7 906 247 00 01) in my contact list telegram and all.
<strong>How they did it?</strong></p>
<p>I read  telegram api documention  and I found nothing. also I found this question <a href="https://stackoverflow.com/questions/31078710/how-to-obtain-telegram-chat-id-for-a-specific-user">How to obtain Telegram chat_id for a specific user?</a></p>
<p>wherein said that before send message I can get chat_id and send message boot telegram for get user chat_id from message</p>