Change of address forms are a scam, it is “free” because USPS sells the data to advertisers and your new mailbox gets stuffed with junk mail.

I never use the service, only naive or desperate people would. It’s easy to login to all important accounts and change your address today, there is no practical need for a COA form.

So USPS hasn’t any idea about my fleeing of Silicon Valley last year, and that’s fine with me !