Intergalactic Net

Overview

Visually these terminals appear to have no function, but it turns out they have some secret functionality!
In the current emulator they are part of the implementation of the Item Mail (NTA) / Item Claim (NTA) service, with the other part implemented via the Net-7 website, see the sections below for details.
NTA stands for "Net Trap Application"
In Sunset Live these terminals provided access to Net-7 news (the in-game "news" entity, not the group that maintains the emulator, see Net-7) and the Earth & Beyond web portal including payment and customer support services, etc.
See the Station List at http://enbmaps.de/index.php?stationlist to locate a station that has one of these Intergalactic Net terminals.

In order to send an item to another player (with an optional fee, i.e. cash on delivery (COD)):

Navigate in-game with the character that has the item you want to send in their cargo to one of these Intergalactic Net terminals.
Interact with the terminal and you will see a mostly blank white screen with an HTTP 404 error (this is expected).
Now in a web-browser navigate to https://www.net-7.org/#apanel/ and select the character with the item who is sitting at the terminal from the list on the left-hand side (you will have to login if you weren't already)
Select the "Inventory" tab for that character
Select the "Cargo hold" tab for that character (you can not mail items from the "Vault")
Right-click on the item which you wish to mail and select "Mail Item"
Enter the following information:
- The message to include in the mail (if you want to change the pre-populated one, you can leave it as-is)
- The number of credits to charge for the COD (you can leave it as 0 to send the item free-of-charge)
- The name of the recipient character (this is their name exactly as shown in-game)
Click Lookup Receiver (even if you entered the name exactly) and it will pop-up a list with any matches; you must click the name in this list even if there is only one, then close the dialog, otherwise you will get an error like "invalid item [receiver]!" even if the name is entered exactly. The Lookup Receiver dialog must be opened and clicked.
Click Send Item
Amazing!

In order to receive an item which was sent to one of your characters the process is similar:

Navigate in-game with the character that received mail to one of these Intergalactic Net terminals.
Interact with the terminal and you will see a mostly blank white screen with an HTTP 404 error (this is expected).
Now in a web-browser navigate to https://www.net-7.org/#apanel/ and select the character which received mail who is sitting at the terminal from the list on the left-hand side (you will have to login if you weren't already)
Select the "Item Claim (NTA)" tab
Click "Claim Item" on the item you wish to claim
Amazing!