This is the email for Yamato Transport (AKA Yamato Black Cat, Global Yamato). (a Takkyubin or Ta-Q-bin is just Japanese for luggage delivery service)
[email protected]
Its a weird email but it is very effective and a reply is very fast - usually within 1 hr or so
I used this email when I wanted to get my luggage delivered from hotel to hotel and from hotel to airport.
The English language can be used and they will reply in English
In the email just say you want to get luggage from A to B
You can say you want the luggage to arrive at B, and then ask when they have to pick up luggage by.
Or you can request a pickup date and they will tell you when it will arrive
I try to book a pickup a few days before pickup date
Please carry a measuring tape and a portable scales as this will assist in the recording of the dimensions/weight.
You can pay on pickup (cash) or ask the concierge to charge to room.