In todo4teams there is the possibility to quickly notify another todo4teams user or even teams. The prerequisite for this is that these users have accepted receiving web push messages. Then you can click on the profile icon at the top right

Use the “Send message” menu item to open the dialog for sending web push notifications:

This is a convenient way to notify another user or team. The highlight is that the messages are transmitted to the device even if the user is not currently logged in.