1 example sentence using epistolatory.
    Epistolatory used in a sentence
  
Epistolatory in a sentence as an adjective
Williams was not an unknown: his epistolatory novel Augustus won a National Book Award. I read Stoner in the late 1970s, before it went out of print for some time.
Epistolatory definitions
            adjective
            
      written in the form of or carried on by letters or correspondence; "an endless sequence of epistolary love affairs"; "the epistolatory novel"
See also: epistolary