AFAIK there's not really a BP for 5-MeO-DMT at normal pressure. So it is anyways just an evaporation taking place.
I don't use high temps on my atomizer. IMHO by conduction you simply can transfer more heat energy per time as by convection, as air has a terrible heat capacity.
I also think that evaporation works better if you heat the substance instead of just the air.
(e.g. heating water to like 80°C and drawing 20°C air above it, vs drawing 80°C air above 20°C water)
And additionally it is much more comfortable to inhale "cool air" than hot air...
That's why I think conduction works much better for this substance.
But this could well be an ill thought theory.
I claim not that this is the truth. As this is just what got manifested into my mind at the current position in time on this physical plane. So please feel not offended by anything I say.