Discussion: FML::Mailer Is Apropriate ?

Only FML::Process::QueueManager uses FML::Mailer. So, independent FML::Mailer class is needed ?

In usual codes, reply_message() handles all message operations. FML::Mailer is always behind it. But modules other than reply_message() is created in the future ? Hmm, ...

FML::Mailer should be merged into FML::Process::QueueManager class?