Information Security

Avoiding Undeliverable OIG Emails

graphic of an email icon

Some employees are receiving “undeliverable” responses when they try to email the USPS® Office of the Inspector General (OIG) because of a glitch that occurred during a recent system upgrade.

To avoid this problem, users should type the recipient’s full email address (i.e. when sending emails to the OIG.

For more information, contact the Postal Service’s Computer Incident Response Team at 866-877-7247 or via email at