As others already said in this thread, i also think that Telegram channels are the fastest and most direct contact to any project. Most projects have a channel for communication where every one can send messages to chat with each other or asking questions to the other community members, admins or directly to the project team and then there is also a announcement channel which is read-only where all the important news are posted. So the best thing would be to join at least that announcement channel on telegram and then set it that you always get an alert on your phone when a new message is posted in it. That way you should never miss an important announcement anymore.