A Secure Mailbox is a secure online portal provided by the IRS where organizations and individuals can securely exchange sensitive information with the IRS. It is used for transmitting and receiving encrypted files and messages. The IRS uses the Secure Mailbox to enhance the security of communication and protect sensitive data from unauthorized access. For online PTIN account holders, the Secure Mailbox is an online secure inbox where the IRS sends messages about the PTIN. Notifications are sent to the email address associated with the PTIN account whenever a new message is placed in the secure inbox. To access the Secure Mailbox, users need to log in to their PTIN account or click on the “Mailbox” link in the blue toolbar on e-services screens.
Sources:
1040 (2023)
IRS Secure Messaging Pilot Coming to More Campuses
CC-2020-002
