How to adversarial migrate: https://www.da.vidbuchanan.co.uk/blog/adversarial-pds-migrat...
*requires your own PLC key, which the vast majority of users do not have, protonmail has good prior art here (imo)
*requires your own PLC key, which the vast majority of users do not have, protonmail has good prior art here (imo)
I'm not aware of what Proton does here, I'll look into that.