5. The method of claim 1 , wherein the method further comprises: generating a next filename comprising Filename.ext, copying the file from the first storage to a second storage of the data processing system; renaming the file in the second storage with the next filename; sending to a third link in the chain the communication comprising the document and the renamed file in the second storage attached to the document.
5. The method of claim 1 , wherein the method further comprises: generating a next filename comprising Filename.ext, copying the file from the first storage to a second storage of the data processing system; renaming the file in the second storage with the next filename; sending to a third link in the chain the communication comprising the document and the renamed file in the second storage attached to the document. 7. The method of claim 5 , wherein the existing filename consists of Filename.ext, and wherein the next filename consists of the new filename.