shipping rear fanged snakes

This post is prompted by an ad I saw a few minutes ago. I have not dealt with hots in some time, and was curious what the "current" theory and practice is regarding shipping rear fanged snakes. While there are some that are essentially harmless (ie hognose snakes), there are others that are widely accepted as venomous...I know hognose snakes are frequently shipped via normal carriers, but what about the others? Would a boomslang be shipped via overnight carrier, or would Delta be legitimate option? If some opistoglyphs are restricted to "venomous rules", where is the line drawn? (the last time I had a "non hognose" rearfanged snake shipped, it was under venomous rules...but it was long enough ago that I don't remember if there were other hots in the box)

Comments and discussion would be much appreciated

I find it easier to ship all snakes via Delta Dash. 99.9% of the snakes I ship are venomous so I use Delta all the time anyway. It's usually very reliable and arrives the same day as shipped. I am not set-up with any other carrier. Last year I attempted to ship some Rat Snakes and found it to be difficult to do legally or within the rules of the carrier.
I don't see a problem with shipping Hognoses or others that are not considered a possible threat. Boiga and Hydrodynastes I feel should be shipped via venomous snakes regs. I did ship a pair of adult Hydrodynastes and they definitely needed a strong wooden crate.