Check these out while you're waiting:

• Did the Romans have a commercial postal service? by /u/legfeg

• Did the Romans have a system of mail? If so, how were these delivered to the right addressee? by /u/LegalAction

• How were the letters written by Apostle Paul delivered? by /u/bitparity

• Did Rome have anything like a postal service? I mean, if you have such a huge empire, how are messages sent between government officials or just between commoners?

• What was mail like during medieval Europe? How easy was it to send letters across Europe, or to your cousin in another village? by /u/Talleyrayand