Methylates DNA on the 6th position of adenine (N(6)-methyladenosine) (PubMed:25936839). N(6)-methyladenosine (m6A) DNA is involved in epigenetic transgenerational inheritance (PubMed:25936839). a 2'-deoxyadenosine in DNA + S-adenosyl-L-methionine = an N(6)-methyl-2'-deoxyadenosine in DNA + H(+) + S-adenosyl-L-homocysteine Belongs to the MT-A70-like family.