Medication Access Improves Lives Act or the MAIL Act This bill increases the Medicaid Federal Medical Assistance Percentage (FMAP) for covered outpatient drugs, including mail-order drugs, beginning April 1, 2020. The bill's increase may not result in an FMAP greater than 100%. Additionally, Medicaid enrollees must be allowed to obtain the entire prescribed supply of a covered outpatient drug in a single fill or refill, up to a 90-day supply.