Can I send emails/make phone calls/send postcards from Tanzania?
Internet cafes have hit Tanzania and especially in the central area of the cities. Prices are cheap, but the connection speed is sometimes disappointing.
There are post offices where you can buy stamps, envelopes and postcards. The post is reasonably reliable although it may take some time to reach its destination, however courier services such as DHL are available. Telecommunications in Tanzania is generally good.
You can even use your standards GSM mobile phone in Tanzania. If you plan to use it a lot, you might consider purchasing a local SIM card.