Github Repository: tulir/mautrix-telegram (third party)
The Telegram bridge allows Telegram and Matrix users to communicate with each other.
@matrix_t2botto your Telegram group or channel
/idto get a number returned to you by the bridge
!tg bridge <the number from earlier>. Example:
!tg bridge -23456789
By default the bridge uses a "relay bot" for people who are not logged in to the bridge. This can lead to confusion when the Telegram bridge posts lots of messages in your Telegram chats. By using your own Telegram account, the bridge will send messages to chats with your account rather than the relay bot when you talk on matrix. In addition to that, you also get invited to all current and future Telegram chats - it's like using Telegram in Matrix!