Between 1980 and 1985, he produced over 1000 pieces of mail art, mostly sent to his mother in the final years of her life.

However, he continued to practice mail art even after this.

Both of these interests increasingly informed his collages, performances, and mail art.

She used to be active in mail art as well.

Very early in his career he invented what came to be called mail art.

He has been a participant in international mail art since 1985.

He set up a mail art exhibit at a museum in Santiago.

The group even appropriated the postal system in developing mail art.

In addition to writing, he makes digital graphics and mail art works.

He was also an early experimenter with alternative publishing, mail art, and performance poetry.