obsequiously complimentary

a sweet yellow liquid produced by bees, a beloved person; used as terms of endearment, the gathering of honey from hives, or the honey which is gathered, adjective_ of something having the color of honey, A spectrum of pale yellow to brownish-yellow colour, like that of most types of honey, Describing a thing involving or resembling honey, transitive verb_ To give a yellow or golden color to, To sweeten with honey; add honey to, intransitive verb_ To be gentle, agreeable, or coaxing; to talk fondly; to use endearments; also, to be or become obsequiously courteous or complimentary; to fawn

Expressing, using, or resembling a compliment, With respect to the closing of a letter, formal and professional, costing nothing,