2. The method of claim 1 , wherein the electronic message includes a second attachment viewing link corresponding to a second attachment associated with the electronic message, the second attachment having a document type, and said method further comprising: in response to a single user selection of the second attachment viewing link, obtaining from the document storage system a second converted document corresponding to the second attachment, wherein the second converted document has a document type different from the document type of the second attachment; and displaying the second converted document in a third instance of the client application.
3. The method of claim 2 , wherein the document type of the first converted document is the same as the document type of the second converted document.