Ditching Linkedin Sales Navigator, but have 1 week left

I have Linkedin Sales Navigator, but I dislike it, both because of cost but also because I don't get much traction from the messages sent there. I am migrating to Pipedrive instead. Questions: 1) how can I export data into Pipedrive from Linkedin? 2) in the remaining week, how can I best utilize 3) is there a system by which I can check the validity of the emails of contacts I've collected so far?