So I've read the info about shipping sempervivum and sedum, but was wondering if there is a difference when shipping succulents such as echeveria? Any insight helpful!

Serse, I would't think there would be that much difference to warrant any change of procedures. I think of echeverias as big fat sempervivums except that they are more tender... in sensitivity to cold and in breakage (like sedum). I think semps are not as fragile or brittle (right word?) as echeverias.

Serse, I'd be careful mailing echeverias this time of year, most can't handle cold temps, and even if its not too cold near you, or during the day, it can get quite cold during shipping (like if its being transported via plane, in the cargo area. Or under grow lites (Bev!)

Aww, can't Serse wrap her eche's in nice crocheted blankets (Greg) so that doesn't happen?
With Lynn's advice about saran wrap or flannel-lined paper bags containing the semps/sedum, what could go wrong?
Ok, I guess we should take the cautionary approach; nothing worse than semp popsicles arriving at somebody's door. I read somewhere on internet nurseries warning that shipping dates could vary depending on the climate of shipper and destination of the ordered plants, so I guess we should take that into consideration when doing trading so early (for those that are, that is). No wonder some people are waiting till May when semps aren't frozen and deliveries could be safer...

Yep, or if you know the estimated weather of receiver. How cute would that be to have the semps wrapped in a little blanky!
For echeveria or other non-hardy plants, you can get the heat packs and ship them that way...it'd be far too warm for semps though! and most likely unnecessary (in my opinion)

Just a comment on the heat packs. I always steer away from the offered heat packs.

I requested one on a tropical plant I purchased (and paid extra for the heat pack). It was not secured in the box and bludgeoned the plant to death in shipping. After that experience, I find it preferable to wait till warmer weather and/or take a chance on the weather.