Content and Growth Copilot for Creators

The service supports Public and Private channels, as well as groups. In channels, you can use teasers and advertising posts, and in groups, only advertising posts.

Yes, you can set targeting by language, country, and categories so that your boost posts are displayed only in the desired channels.

Yes, the bot is safe — it only has minimal access rights.
For advertisers, the bot only obtains permission to create invite links in order to track new subscribers.
For channel owners, the bot only has the right to "edit posts": it adds a recommendation line and removes it after 24 hours.
The bot cannot edit posts older than 48 hours because Telegram protects old content.
The bot does not actually edit your posts; it only adds a new line.
For advertising posts, the bot needs the permission to create posts — it only has access to the posts it created itself; it does not have access to your posts.