Originally Posted by ptquilts
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not true, the cutoff is about 7 ounces. For instance, a 13 ounce book is $2.41 media, $3.41 First class.
I am afraid it is I that is correct...
as taken from the USPS website:
First-Class Mail gets your mail there fast.
Postcards, letters, large envelopes (flats) and small packages can be sent using First-Class Mail®. This service, along with Priority Mail and Express Mail, is ideal for sending personal correspondence, handwritten or typewritten letters, and bills or statements of account. It may also be used for advertisements and lightweight merchandise. First-Class Mail prices are based on both the shape and weight of the item being mailed. For items weighing more than 13 ounces, use Priority Mail.
First-Class Mail includes:
First-Class Mail Cards – rectangular cardstock mailpiece not contained in an envelope.
First-Class Mail Letters – small rectangular mailpiece no thicker than ¼ inch weighing 3.5 ounces or less.
First-Class Mail Large Envelopes – flat rectangular mailpiece no thicker than ¾ inch.
First-Class Mail Packages – a box, thick envelope, or tube weighing up to 13 ounces.
Presorted First-Class Mail – for high volume business mail
First-Class Mail Commercial Plus – Commercial customers who mail higher volumes of lightweight packages have the option to use First-Class Mail service.
Priority Mail® - Cost-effective delivery in 2-3 days to most locations.