Recommendations:
Cenotaph (related to The Chasm region-wise, being from Mexico and all... and also musically as well, through their exploration of mood through deep use of melody and texture, check out "Gloomy Reflections of Our Hidden Sorrows" and "Riding Our Black Oceans")
Phlebotomized (avant-garde death metal band from the netherlands who have expnaisve orchestral parts which give off an emotional and esoteric effect; check out "Immense Intense Suspense")
Creepmime (criminally-underrated death metal band who have a very doom-influenced sound backed with catchy muscular riffs; the atmosphere can be described as epic and sorrowful... "Shadows" is their best album)
Cadaver (not quite sure if this fits the bill as being "emotional" but I find there is certainly something stimulating and recondite about their unqiue syncopated power-chord approach to songwriting... check out "...In Pains")