epistolary vs epistolatory

epistolary and epistolatory both are adjectives.

Word	Noun	Adjective	Verb	Adverb
epistolary	No	Yes	No	No
epistolatory	No	Yes	No	No

As adjectives, epistolary and epistolatory are synonyms defined as:

epistolary and epistolatory: written in the form of or carried on by letters or correspondence

epistolary (adjective)	epistolatory (adjective)
written in the form of or carried on by letters or correspondence	written in the form of or carried on by letters or correspondence