The email went out to Kelsey's friends and contacts Wednesday morning ... according to the New York Post.
Kelsey -- who's still waging a child custody war with Camille Grammer -- quickly sent a follow-up email explaining the odoriferous email came from an old shared account, and "third parties" continue to have access to it.
Kelsey cryptically said of the unnamed person, "May I suggest that it is 'they' who owe you an apology."
We would've gone with, "S/He who detected it, ejected it" ... but whatever.
