Mail-Art has been becoming more and more popular at the international level. With that in mind everyone of them have either themes or size requirements. Some time the instructions are lost in translation. So we are getting mail that is oversized. We welcome them all but would love it if you would adhere to the size at least. A normal envelope no larger than a #10 with that said. This means nothing to the international mail art aficionados, as this is a U.S. standard. Just keep the wonderful work coming and we will post them. We are now working on our first installation. This was a card, oversized, and it was an original work of art posted. By the way we do not open envelopes. Thank you, Graci, milli graci!