Hey there! Let's walk through this step by step—this is a super common use case with Telegram's built-in deep linking system, and your proposed links are actually spot-on.

核心实现逻辑 #

Telegram supports deep links that let you directly open a chat with a specific user/bot and pre-fill a message for the user to send. This works seamlessly across desktop, mobile apps, and the Telegram web interface.

你提供的两种链接是否有效？ #

Absolutely! Both formats are officially supported, just tailored for slightly different scenarios:

• tg:// protocol link: This is designed to directly launch the local Telegram app (if it's installed on the user's device). The format you shared is correct:

  tg://resolve?domain={USER_NAME}&text=Hi, default message
  

  Replace {USER_NAME} with the target account's username (without the @ symbol). For example, if the account is @JaneSmith, the link becomes tg://resolve?domain=JaneSmith&text=Hi, default message.
• https://t.me web/app link: This is a universal link that works across all devices—if the user has the Telegram app installed, it'll open the app; if not, it'll redirect to the Telegram web interface. Your format here is also correct:

  https://t.me/{USER_NAME}?text=Hi, default message
  

  Again, swap {USER_NAME} for the actual username (no @). For @JaneSmith, that would be https://t.me/JaneSmith?text=Hi, default message.

关键注意事项 #

• URL-encode special characters: If your pre-filled text includes spaces, commas, question marks, or other special characters, you'll need to URL-encode them to avoid breaking the link. For example:
  • A space becomes %20
  • A comma becomes %2C
  • A question mark becomes %3F
    So the message Hi, how's it going? would become Hi%2C%20how%27s%20it%20going%3F, making the full link:

  https://t.me/JaneSmith?text=Hi%2C%20how%27s%20it%20going%3F
  

• Bot vs. User accounts: These links work for both regular user accounts and Telegram bots—no extra setup needed as long as the target account has a public username.

内容的提问来源于stack exchange，提问作者H Aßdöü