Changes made to a document are automatically summarized within an electronic message. The changes may be made to a document that is being collaborated on. For example, the document may be an attachment to an electronic message, a link to a shared document that is contained within the electronic message and/or a document that is being shared between a different users. The document may be any type of file to which changes/comments are made, such as word processing documents, spreadsheets, slides, and the like. A reviewer may make many different types of changes to the document (e.g. deleting/adding content, adding comments, and the like). After making any changes to the document, a summary of the changes is automatically inserted into an electronic message that is then sent to one or more recipients. Live information relating to the document may also be displayed with one or more electronic messages.