Shipping costs

Hello, I did some research, but cannot find the answer in the topics.
I was wondering, when I have a book to sell, I can send this in an envelope, not in a package.
In this way the shipping costs can be reduced.
is there a way to get this done with a shipping plugin? By entering the dimensions at the product?

Hope to hear from you,
Regards, Peter

Hello Peter,

I think you can use Item Shipping plugin so you just need to enter the fixed shipping cost for every products in your store.

Not sure it will work as your expect or not.
Sincerely, Giang