Why even bother at this point? PGP encryption in email is... not a good way to do secure communication.
Or are you referring to email
https://blog.filippo.io/giving-up-on-long-term-pgp/
https://latacora.micro.blog/2019/07/16/the-pgp-problem.html
https://blog.cryptographyengineering.com/2014/08/13/whats-ma...
https://www.techrepublic.com/article/why-pgp-is-fundamentall...