Mencelus said:even letters take weeks or months to get to you (and the other one, the one at home, doesn't even know where to send them)?
You desperately need to get a message to a friend/contact/ally/family member. However, he or she is a Traveller. How would you even know where to send the message? Here's how I solved that same, long range communications problem in my game: Viral Messaging.
You go to the nearest Starport (preferably a class A), and you give them the message. The message can be encrypted for an additional fee. You designate how far the message should go: Sub-Sector, Sector, or further. Each additional feature addd to the Viral gets substantially more expensive. The most expensive messages, sent from the most powerful and wealthy of patrons, can span the breadth of the Imperium, and possibly beyond.
Here's how it works. Each X boat that passes through the designated starport becomes "infected" with a digital copy of the Viral Message that was sent out. Each starport that they subsequently visit become "infected" with the same message. Each "infected" port will then "infect" each passing X boat. Soon enough, an entire Sector (or further) can thus have a copy of the message at every major Starport. Travellers can even earn a small commission from the X-boat network for agreeing to carry Viral messages to lesser travelled Starports. Each port that they deliver a Viral message to that didn't already have that same message in their system will earn them a small commission (paid only once a year to the ship, and often a year or more out-of-date).
Most Virals carry a built in "self destruct" code. They can be created without one, at an additional charge. A typical "self destruct" code will be one or two years. After that time, each copy of the viral is encoded to delete itself, regardless of where it is at.
Meanwhile, Virals generally also have a destruct code built in to themselves as well. Once the message has been delivered and the proper recipient has been verified, the current viral turns into a "kill code". Kill codes are generally much, much smaller as far as memory requirements are concerned. A kill code moves virally, just like the original message, and deletes any copy of the original message that it finds. Kill codes also "innoculate" information systems, so they cannot download that same Viral message again.
Anyhow, whatcha think?