I'm a little concerned, this is a reputable vendor that I work with directly. We've done business for a long time now, but this time. I got my letter and there was NO RETURN ADDRESS.
NOTHING.
Scared me a little because isn't this a red flag? I'm just hoping it doesn't raise suspicion with my mail carrier..
Edit: I did ask him to use a business name on the return address, but never mentioned to NOT use a return.
A lot of junk mail I get, like adverts and credit card offers, doesn't have any return address. If your mail carrier had any suspicions about your package they probably would have seized it.