Is Fast ESA Letter Legit? March 10th, 2021 Fast ESA letter is considered a trusted source for obtaining an ESA letter, as long as your ESA letter is issued by a licensed healthcare professional. Related Posts Best Diet for Dogs That Are Service Animals How Do I Say Sorry to My Dog? Understanding Dog Emotions and Behavior How to Get an ESA Letter in California [therapypet_step1_form show_in_mobile="1"]