Telegram : How can show welcome message for new join bot

Question

I create new bot in telegram bot ,and do steps like here :-

https://core.telegram.org/bots#

But now i need when any new user join in my bot, i need to show him welcome message.

How can do that ?

Solution 1

Use /setdescription and /setabouttext @BotFather commands

Solution 2

You need to implement the /start command in your bot realization - set the welcome message.

And you should describe this command in chat with @BotFather via /setcommands for your bot.

After that when user adds your bot, the /start command fires automatically, and he will see the message you implemented.

Solution 3

You must send these commands to @BotFather

/setdescription

then send your bot id like:

@example_bot 

and send you welcome message

Welcome to my bot