From Social Security's Update Newsletter:
Social Security Disability Insurance and Supplemental Security Income beneficiaries with a my Social Security account can now access case documents through the Message Center of their my Social Security account.
Please let your clients know they must contact the local Social Security office, hearings office, or Appeals Council branch where their case is pending to request that a copy of their case documents be sent to their my Social Security Message Center. Also, remind them to turn on my Social Security Message Center notifications at www.ssa.gov/myaccount so they can receive an email or text when the documents are available. You can learn more about this new feature at www.ssa.gov/appeals/electronic_case_document.html.