As nouns the difference between assignee and mandatary
is that assignee is one to whom a thing is assigned while mandatary is one who receives a mandate.
assignee
English
Noun
(
en noun)
one to whom a thing is assigned
(legal) one to whom rights or property is being transferred
one who is appointed to act or speak in place of another; an agent
Anagrams
*
mandatary
English
Noun
(mandataries)
One who receives a mandate.