LETTER: Letter Shop's 3602 Form Doesn't Mean Anything
While I agree with his advice, in most cases, this "proof" is barely worth the paper it is printed on. Most large letter shops have in-house postal facilities. The completed 3602 form merely proves that the postage has been paid and that the mail has been turned over to the on-site postal clerk.
Unfortunately, we have seen cases where 3602 forms were completed, but a portion of the mail was later found still in the facility. Also, in most places the mail is only spot-checked or weighed for quantity. It is almost impossible to make sure that every piece of your mailing actually went into the postal stream without actually being on site.
I would be very interested in hearing your readers' thoughts on a way to tighten up the system so that there is true accountability on the transfer from letter shop to post office.