post.smzdm.com is the community hub of SMZDM, one of China's better-known shopping guidance platforms. Think of it as a giant consumer forum: members post deal alerts, unboxings, and buying guides. There is no checkout here. The question is whether you trust the recommendations, because payment safety is not part of the picture.
The site has years of real history behind it and no credible fraud flags. That part of the trust picture is solid. The gap is on the paperwork side. A community that asks you to register should make its privacy policy and terms of service easy to find, and this one appears to be missing at least one of them.
If someone asks 'is post.smzdm.com a scam', the honest answer is that nothing in the evidence points to fraud. Treat it the way you would any user-generated review site: good for shopping research, not for blind obedience. When you join, share only what you are comfortable making public.