I can't speak to what is allowed by their rules, but the worst stuff
I've seen has a full color print on the front with a white box for the
To: address, with stamps over the printing, and the from address in
low contrast over the printing.  In cases where the stamp is part of
the printing (presorted first class, etc) then it's within a white box
in the appropriate place.

The text in the white box should be machine readable, and you should
consider adding the USPS barcode to the address so they don't have to
print it on your envelope or sticker it on there.

According to the website you linked, it appears that what I've said is
pretty much it.  White space for a centered to: address, white space
for stamps and postal markings, and white space for return address if
you want the piece returned should it be deemed undeliverable.

You can print whatever you want elsewhere and everywhere.  Do other
postal systems have more strict requirements?

-Adam

On 6/28/07, Vitaliy <spam@maksimov.org> wrote:
> Somebody? Anybody?.. <:-/
>
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