Technology is disclosed herein that enhances collaboration notifications. In various implementations, a notification queue is maintained for internal notifications that are generated as editing events that occur in relation to a shared document. The notification queue is periodically queried to determine which of the notifications qualify at a given time to be communicated externally to a group of users. An individual notification is communicated when only a single internal notification qualifies. But when multiple internal notifications are present that qualify, then a group notification is sent. Thus, users are presented with fewer notifications than otherwise, improving the user experience and conserving communication and computing resources.