Annabelle you've got mail

I see what you did there! "You've Got Mail" is a classic rom-com starring Meg Ryan and Tom Hanks, and Annabelle is a character from the Conjuring franchise. But I'll play along!

In the movie, Annabelle is a character who is actually a doll, but in the Conjuring universe, she's a possessed entity. So, if I were to respond to your "You've Got Mail" reference, I'd say:

"Hello, you've got mail... from beyond the grave! Annabelle's got a message for you, and it's not a love letter"