Hi,
How risky is it to receive enveloped packages of weed via mail?

I understand that postal mail is not meticulously checked (at least outside of the US.) If a letter containing drugs is seized, should I expect a cop at the door w/ a search warrant? or just a note saying that my letter was intercepted.

It seems that the latter is more likely because anyone could flatout deny being involved () ...maybe thats too optimistic. Any feedback would be much appreciated.