Secret Pal

Thank you. I'm drinking my new coffee out of my new mug. I appreciate it so much. BUUUUUUUUUUUUUUUUUUUT I do have to admit I am more than a little disappointed.
When I saw the box I screamed I was tickled to death. I said now I'll find out who my wonderful secret pal is. But when I opened the package and found another letter I said I guess I'll have to wait a few more days.
So somebody help me out here. So far I have the letters D A G and todays Y. I'm still not seeing it. I can't figure out who it is. But I can say you have been the best. Thank you. Love, Miss Mary