Courier droid (Earth-2356)

A courier droid, or messenger droid is a droid designed to deliver information or transport packages to a designated recipient. Courier droids that worked for NewsNets were often referred to as newsdroids. If the designated recipient was not available, certain of these droids were authorized to deliver the message to an authorized representative, provided that representative could provide the password.

GOUD-4 was a notable courier droid enslaved on Kessel.

Source

 * https://starwars.fandom.com/wiki/Courier_droid.
 * https://starwars.fandom.com/wiki/Messenger_droid.