Today I registered a new portal for sending and receiving postcard around the world. It is called "Postcard Hub". Until I get approval from the admin, I still cannot get a new address.

Updated. My PostcardHub account has been approved just now. So, I can send 2 postcards today, ie:

1. Julia, Texas, USA
2. Aimy Wannaprapai, Bangkok, Thailand

and for Postcrossing, ie:

3. Gemma, Doetinchem, The Netherlands
4. Christine, Stralsund, Germany
5. Snezana, Taganrog, Russia
6. Wen, Taichung City, Taiwan

I hope the postcards will get to you soon.