letterbird - digital letters 对比 Postfun - exchange postcards 的使用情况和统计数据

Do you want to receive real paper postcards from around the world? You can find new friends on the other side of the planet. For each postcard you send you will receive one back from a random user. How does it work? 1. Request an postal address and a Postcard ID in our app. 2. Prepare real paper postcard. Fill it, write Postcard ID on the postcard and send it to requested address. 3. Please, wait some days... 4. Receive a postcard from another random Postfun user! 5. Register the Postcard ID you have received and thank the sender. 6. Go to number 1 to receive more postcards! In the world several million people exchange postcards every day. Become one of them! This is a very exciting hobby. You can collect postcards on a particular topic. Or it will be just postcards with stamps from different countries. Everyone will find what he likes in our common hobby. And our Postfun team will do everything to make the exchange of postcards as pleasant as possible for you.