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 Emotional Support Animals for Anxiety 10 Best Harnesses for Small Dogs You Should Buy How Do I Say Sorry to My Dog? Can I Get an Emotional Support Dog for Anxiety? [therapypet_step1_form show_in_mobile="1"]