Man pages matching name email::mime::encodings in section 3pm:

Email::MIME::Encodings.3pm.en	debian 10 / libemail-mime-encodings-perl
Email::MIME::Encodings.3pm.en	debian 11 / libemail-mime-encodings-perl
Email::MIME::Encodings.3pm.en	debian 12 / libemail-mime-encodings-perl