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 Can Dogs Sense Depression? Dog Breed DNA Tests: Which Tests Are Best? 7 of the Best Vegetables for Dogs to Add to Your Pet’s Diet How Do I Certify ESA? [therapypet_step1_form show_in_mobile="1"]