Email compatibility

[MythotiK]

Has anyone noticed issues between proton and countermail?

Seems like some of my emails don't get through between the two...

 

[gr8whitetrukker]

Yes.
My source uses countermail. I use protonmail. He rarely gets any fucking thing i send him
Its all countermail problems. They fuckin suck

 

[Bender83]

I have issues as well. Using proton/tutanota, every email that I receive from someone using countermail comes through like a pgp encrypted email, even if no pgp is used. So I personally either have to avoid sources using countermail or buy my own countermail so I can communicate.