Our prepress team sent this warning with your Online PDF proof if you have artwork starting or ending right at a folded edge.
We can not guarantee accurate print-to-diecut registration on your whole order. Slight shifts may occur during the printing, trimming and folding process and the artwork may shift slightly onto the other panel of the envelope. Therefore we do not recommend artwork starting or ending right at the folded edge - instead, we recommend a safety margin of at least 0.125 inches from the folded edge.
Please refer to the four example illustrations below and call our Customer Service Line at +1.888.667.0067 if you have any further questions.