Effective Immediately the Association will not be servicing clientele in person. All business channels will remain operational via phone, web and fax. Payments should be made on our website when possible. Click here to make a payment. If paying by mail please send to, MPIUA PO Box 981030 Boston, MA 02298-1030 Please complete as much business through web channels. If you are an insured, please contact your insurance agent for them to submit applications, policy change requests, inspection request and claims online.If you have any questions you can always contact our Customer Service Department at 617-723-3800.