10. The non-transitory computer-readable medium of claim 9 , wherein the plurality of document references includes a second reference, and wherein the instructions cause: determining that the message includes metadata for the second reference based on the comparison; and in response to determining that the message includes metadata for the second reference, updating the metadata for the second reference managed by the content management system.
10. The non-transitory computer-readable medium of claim 9 , wherein the plurality of document references includes a second reference, and wherein the instructions cause: determining that the message includes metadata for the second reference based on the comparison; and in response to determining that the message includes metadata for the second reference, updating the metadata for the second reference managed by the content management system. 11. The non-transitory computer-readable medium of claim 10 , wherein the first reference corresponds to a first user account of the content management system and the second reference corresponds to a second user account of the content management system that is distinct from the first account.