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 How to Get an ESA Letter in New York Can a Landlord Deny an ESA? How Much Is to Certify a Therapy Dog? The Mental Health Benefits of Owning Pets [therapypet_step1_form show_in_mobile="1"]