SYNOPSIS

 use Mail::Message::Convert::MimeEntity;
 my $convert = Mail::Message::Convert::MimeEntity->new;

 my Mail::Message $msg    = Mail::Message->new;
 my MIME::Entity  $entity = $convert->export($msg);

 my MIME::Entity  $entity = MIME::Entity->new;
 my Mail::Message $msg    = $convert->from($entity);

 use Mail::Box::Manager;
 my $mgr     = Mail::Box::Manager->new;
 my $folder  = $mgr->open(folder => 'Outbox');
 $folder->addMessage($entity);

See SYNOPSIS in Mail::Message::Convert

DESCRIPTION

The MIME::Entity extends Mail::Internet message with multiparts and more methods. The Mail::Message objects are more flexible in how the message parts are stored, and uses separate header and body objects.

See DESCRIPTION in Mail::Message::Convert