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A realtor I knew used this to send loan documents to the bank. She would just use clear tape and tape the envelope on top of the big fat manilla envelope of papers and drop it in the mail. Clearly the postage was different but the post office seemed to process it fine.

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Actually, the post office may have noticed, but they probably don't care, since I'm not really cheating them out of revenue; they just charge Fidelity as if the envelope were legitimate.

Only Fidelity might complain, but they created these postage-free envelopes so customers like me would send them deposits, so they probably don't care, either.

It was a just a fun thing to try, and great to see that it worked!

If anything, it's saving Fidelity the expense of buying, printing, and distributing envelopes.

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