Many of you sure know Tutanota, Protonmail or Startmail among others, they ofer privacy friendly and secure mail in an easy manner every user can handle, without complicated GPG configurations, encrypted end to end and even more secure than GPG thanks to Perfect Forward Secrecy (I'm no expert at all, but AFAIK GPG doesn't admit PFS), but the problem is that to enjoy their features they have to be used from the web or their exclusive applications.
Well, since at least Tutanota and Protonmail are open sourced and their developers seem to have a very good attitude towards OSS, could it be possible to get in touch with them and try to collaborate in writing plugins for Kmail to be able to use their services from our favorite mail client?

I would like to collaborate and talk to them, in behalf of Kmail's developers if you don't have the time, but I suppose that it's convinient that somebody who rreally knows the technical stuff talks to them, no?

Reproducible: Always