Just as a matter of interest to Lee and others, the photo is of me some years ago in the return letter branch of RM. The pile of letters are ones not correctly addressed and also damaged ones. If the senders name isn't on the back of the envelope, the letter is opened for the senders address and then returned to them. With damaged ones the same applies and a 'stereotype' letter of apology is put with the item and then in a plastic envelope and delivered.
As you can see from the 'pile' there is no time to read what is on the back of an envelope, so again the staff wouldn't notice.
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