The Ulysses app can do a lot besides writing. I’ve written a lot about how I abuse the poor thing. Its export options offer a variety of formats. One that was convenient was the RTF option. It meant I had one click export to a standard rich text format that’s usually requested by publishers. The v2.1 Ulysses update replaced RTF with DOCX, the new Word 2007 format. These files aren’t usually accepted via email because of the chance that they carry a macro virus.