A tool for managing message notifications in a computing environment includes a computer determining a user receives a notification of a first message received in a collaboration application on a computing device of the user, and determining a topic for the first message. The computer then determines whether the user suppresses the notification of the first message, and if so, the computer stores the topic for the first message associated with an indication the user suppressed the notification for the collaboration application. The computer further determines a second message is received, determines a topic of the second message, and then determines whether the user previously suppressed the topic of the second message. If the user previously suppressed the topic of the second message, the computer suppresses a notification for the second message.