Bulk email is discounted because it saves the mail company a lot of money: it comes presorted, and there is no need to mess around with stamps.
Bulk email is discounted because it saves the mail company a lot of money: it comes presorted, and there is no need to mess around with stamps.
This is never going to be perfect, of course, but anything that reduces the amount of crap I get in my mailbox every day isn't just great for my levels of annoyance, but also great for the environment. 95% of what shows up in my mailbox ends up in the recycling bin. Creating, printing, shipping, and recycling that material is a huge waste.
There are several categories: 500 pieces of first-class mail, 200 pieces or 50 lb as "USPS Marketing Mail", Parcel Select Ground (50-piece minimum per mailing), presorted and carrier route sourted bound matter (300 pieces), library mail (300 pieces), media mail (300 pieces).
<https://www.usps.com/business/business-shipping.htm>
The tradition of discounting certain mailings, especially publications (e.g., newspapers) and books dates to the very beginning of the US postal service and was established by Benjamin Franklin.
<https://www.history.com/news/us-post-office-benjamin-frankli...>
I've nearly done the same several times in this thread myself. "Mail" really doesn't roll off my fingertips so readily these days.