The bot acts only as a bridge between Telegram and Tzibbur. It does not store your message content—message text is deleted as soon as it is delivered.
What is retained is limited to what the bot needs to function: IDs, Telegram topic mappings, and your Tzibbur session. Session data is encrypted with its own key so the bot can remain connected on your behalf. Any short-lived local cache is encrypted as well.
Disclaimer: This project is not endorsed by, affiliated with, inspired by, or owned by Tzibbur in any way.
Source code: