I am not sure how the identity management works for encrypted email for Skiff. The white paper[1] seems to imply that a user has to send a URL with a secret in

I am not sure how the identity management works for encrypted email for Skiff. The white paper[1] seems to imply that a user has to send a URL with a secret in it as with document sharing. Every time? How is the user expected to get this secret URL to their correspondents? Does it require the use of a second messaging system with identity management? PGP for instance? Generally, how does Skiff allow the user to ensure that the message is being sent to their actual correspondent and not the Skiff server? Signal messenger for instance uses "Safety Numbers" for this purpose. [1] https://skiff-org.github.io/whitepaper/Skiff_Whitepaper_2023.pdf\ https://skiff-org.github.io/whitepaper/Skiff_Whitepaper_2023...