Remember the workaround for import from Evernote to Outline, based on a tool by Microsoft and 1-time usage of OneDrive? It’s now officially outdated and thus skippable.
From this moment on, native import from Evernote to Outline directly is at your service.
Here is the plan:
1) Download the latest of Outline for Mac’s.
2) Go to File > Import > Evernote.
3) Fill in the path fields in the smooth window of import magic.
In case anything goes not the way you would expect (too blank, too crowded, too long, or too anything-else), you can request assistance with the import from the Outline tech support rescue rangers.