title: Telegram URL schema: which url to trigger the client to open the "share/send to" dialogue
body: <p>I am working on an telegram bot, and looking for the exact URL schema to popup the "Share / Select Group / Send to" dialogue in the telegram client. </p>
  
  <p>I have seen this link in @pollbot, for which I took following screenshots. </p>
  
  <p><a href="https://i.stack.imgur.com/y7deu.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/y7deu.png" alt="When click this link, Telegram client will popup send to dialogue"></a></p>
  
  <hr>
  
  <p>A bit more details:</p>
  
  <ol>
  <li>What I want is to give end-user an easy way to add the bot to their group, just like what PollBot does: When a poll being created, PollBot will return a special like to the user. Any by clicking that link, the user could easily add PollBot to a group. So I'm looking for the exact URL schema of that link.</li>
  <li>I then check that link PollBot sent to me in telegram web client, and found out it's a <code>tg</code> protocol url: <code>tg://resolve?domain=PollBot&amp;amp;startgroup=5148bed5f90678b93246464b3e132052</code>. So I tried to resend this url via bot.sendMessage. But it turned out Telegram api server won't parse the <code>tg://resolve</code> url. </li>
  <li>So, how could the bot manage to send such a link to the user?</li>
  </ol>