Mail is a good, which is existing only in very limited quantities. In real life, there are also mail boxes only on certain places. Since very few mail is generated, it is very advisable to visely plan and ralise the mail transport network. It is generally a good idea to place mail boxes near to very big mail generating buildings (i.e. sight seeings). Mail boxes are generally placed inside a road vehicle station, which contains mail box ability. Also, mail should be very linked, in order for the mail to better circulate and of course generate profit. For in-town mail transport, road network should be used.

For inter town transport, rail network is more advisable. A rail hub, which accepts mail is very advisable.

The more stations with mail ability are connected, the more profit is generated. Generating mail transport in large urban area is a very good a idea. In some village regions, only road link to a bigger post hub is advisable, in order to make profit with mail transport.