As a general rule, Mail-in-a-Box boxes aren’t supposed to be modified because any undocumented changes could break Mail-in-a-Box functionality, and it’s much harder for folks in our community to provide support when people start making changes to their boxes. You are, of course, welcome to do whatever you like on your own box, but @murgero’s recommendation is that if you do so you’re likely to break something about Mail-in-a-Box, you’re not likely to get much additional help here, and when things break no one will be able to help you.
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