I see that the standard NppExport create HTML clipboard that is not well supported from every programs, so I made a fork here: https://github.com/APerricone/NppExport .
Usually I use it with GMail, I copy HTML to clipboard and do Paste in the mail, with my version the pasted text is with syntax highlight.
I hope others like it.
You may wan’t to have a look at https://github.com/chcg/NPP_ExportPlugin, regarding appveyor build, x64 build. Otherwise there are no functional changes.