Do only Mickey and Cinderella still reply to fan mail or Elsa/Anna too?

[amerikiwiroo]

I've heard that if you send a letter to a disney character, they'll send an autograh postcard reply back!!

I've seen several older blogs that Cinderella was the main reply person for any of the princess letters though multiple princesses autograph the photo and likewise Mickey for any of the fab 5. Has anyone done this recently with the Frozen sisters?

If they don't send frozen postcards, then I'll simply say that I could only find the address for Cinderella and Mickey and have them write their letters to those two. TIA