Enable the ability to have review periods or sessions, and to establish notifications at a session level, rather than a comment level. Example: The review organizer sets a schedule for the QC review. Those in the reviewer role, will have a 5 day window to make comments, once that closes, there is a 3 day window to provide initial responses from the design leads that serve as direction for the updaters, who then have a 10 day window to make their updates and indicate on the comments that the updates have occurred. The BIM manager then re-syncs the model to the cloud, and the reviewers now perform signoff over a 2 day window. The notifications for this would be set at the process level, not for every comment you are a part of. A single email per day, stating where in the process the review session is, and when each participant will have their next involvement. For each reviewer there could also be a summary of comments that they have to act on in order to close out their part in the process.