Man pages matching name doveadm-mailbox-cryptokey in section 1:

doveadm-mailbox-cryptokey.1.en	debian 10 / dovecot-core
doveadm-mailbox-cryptokey.1.en	debian 11 / dovecot-core
doveadm-mailbox-cryptokey.1.en	debian 12 / dovecot-core