Deskop platform icon iOS platform icon Android platform icon This functionality is available on Onshape's browser, iOS, and Android platforms.

Collaborating users can communicate with each other, in workspaces and versions, with comments and mentions. Owners of documents and those the document is shared with directly (and with Edit or Comment permission) can create comments, mention another user, see each others’ comments, assign comments to other users, leave replies, and opt to receive email notifications of comments.