Our platform has capabilities to convert .xls, .xlsx, and X12 files (.xml or .txt) to envelopes. This is achieved by using the built-in converter. To use it, you should use the sample of the needed format file as the source file in the new conversion rule (first window). After that, you have to write a conversion rule in the second window (use Xpath to extract needed values to the corresponding fields). Then try running your rule - you should see output in the 3rd window. Do not forget to add a regexp to the name field so that correct files can be found for conversion. When a conversion rule is created, you can put needed files with corresponding names directly into your intbox or outbox folders, and they will be converted to envelopes automatically.