Mikey Campbell, writing for AppleInsider, reports on the upcoming update to Notes on OS X 10.11.4, which is set to bring support for native Evernote imports:
The new Evernote compatibility comes as part of Apple's Notes buildout, a project that most recently resulted in substantial feature upgrades on iOS 9 and OS X last year. Adding to a rich in-app note-taking toolset, .enex file support means enhanced flexibility for those invested in Evernote's platform. […]
Apple marketing VP Brian Croll mentioned the forthcoming Mac feature in an interview with Japanese publication PC User, saying Evernote "capture" support would arrive for OS X Notes "soon." The report was spotted Mac Otakara on Monday.
I just tried it on my MacBook Air running the latest beta seed of 10.11.4 released earlier today, and it worked like a charm. I exported a handful of notes from Evernote, each containing rich text formatting (links, lists, fonts with different sizes and colors, inline images, etc.) and, despite it being a beta, the results were very good. The app displays an alert warning the user that notes may not look the same once imported – some formatting will always be lost in the transition from one proprietary platform to another – but, as a start, this should be more than enough to move everything out of Evernote without having to use scripts or other workarounds (you can import multiple .enex files at once, of course).
This is going to be an important addition for those who are thinking about moving from Evernote to Notes. I did last summer, and I continue to be impressed by the simplicity and functionality of Notes on iOS 9.