Nylas N1 was a slick open source desktop email client that we had covered almost a year back. In the interim however it went through a change in it’s business model to become a subscription based pro only email app. However having gone a change of heart the app is now back with a free version with several of it’s pro only features brought over to the free version which is now just called as Nylas Mail. You can read more details about this release here.