The Brazilian mail has an electronic system, where you calculate the fee according to weight, size, destination, etc.
But despite the apparent convenience,
rates are high and tolerance is minimal with envelopes.
We can't send almost anything that comes out of the standard size (envelopes and boxes are standardized).
Different materials usually back to back, no post.
The mailartist have to circumvent the attendants!
I have had many discussions with officials, trying to explain what is mailart and why postal transmission of material that is different from the others.
Sometimes, he is convincing and allows the post.
To do so almost always use the same official, who is in a way sympathetic to my work.
Forgive my bad english
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