Buster is part of the problem-solving group known as the Super Sleuths along with Darby, Pooh and Tigger. Though oftentimes he seems to be only tagging along, his nose and his curiosity have proven an asset in many of the groups' cases. Darby also loves him as a loyal companion who is fun to play with.
Noun[edit] mailman â(plural mailmen) ( 1 US) someone (implied male) who delivers mail to, and/or collects mail from, residential or commercial addresses, or from public mailboxes.  The gender-neutral letter carrier is sometimes preferred.
The system is currently used in Hong Kong and in Italy. The Italian certified mail (Posta elettronica certificata) uses protocols described in the RFC 6109 (Request for Comments 6109), which was drafted in order to make the protocols public to the Internet community.