WKD setup for your domain
I have recently tried and was keen to see that Proton Mail supports WKD. $ gpg --locate-key user@protonmail.com gpg: key 4DE32C2A10A7EBC2: public key "user@protonmail.com <user@protonmail.com>" imported gpg: Total number processed: 1 gpg: imported: 1 pub ed25519 2021-10-13 [SC] 67731B189D0908618DF665144DE32C2A10A7EBC2 uid [ unknown] user@protonmail.com <user@protonmail.com> sub cv25519 2021-10-13 [E] So here is quick instruction how to setup WKD for any email (i.e. not hosted by Proton Mail). First you need to create empty file relative to your webserver ROOT....