This question arose during a discussion in my trials team so I took to the forums to find a definitive answer.
I have seen numerous discussions about this topic and everyone seems to have their own interpretations without a definitive answer. Is it a magicka vs stamina thing? Is it range based? Is it damage type (aoe, projectile, melee)? The point is, without testing, players can not determine the real answer as it pertains to eso. There is nothing in game that explains what "melee" damage really is.
If you know of a credible source containing what melee damage refers to, WITH TESTED AND DOCUMENTED PROOF, please link in the comments. (I assume pc players may have tested this or may possibly have an add on that tells them, but have been unable to find it).
If you want to assist in answering this question, but do not have tested proof and can not link documented proof then please click agree and tag developers that you believe could assist in answering the question at hand that way we can draw attention to the question in this post (and many others)
Bottom line: we need an answer from the devs, but actual tested/documented answers are appreciated and helpful.
Thanks