Most users use Markd with LinkedIn, some would spend days adding all their contacts into Markd manually with the browser button. Therefore Linkedin import has been one of the most requested features, and after we finished with Google contacts import, we moved onto Linkedin.
Unfortunately Linkedin does not provide an API to integrate with, so we had to work with the data users can export manually form LinkIn, which is fairly limiting.
However this also prepares us for importing from excel / spreadsheets down the line.
Blog post announcement: https://blog.markd.co/2019/09/04/import-linkedin-connections.html