Service Notice: USPS Label Fraud May Cause Tracking Delays or Incorrect Address Updates
Incident Lifecycle
Affected Components
Shipping
Incident Timeline
Investigating
What's happening
Fraudsters are increasingly attacking USPS by creating counterfeit, unpaid shipping labels — a scheme known as Mailer ID (MID) fraud. This is a growing industry-wide USPS issue affecting all shipping platforms, not specific to Mercari or your account security.
As a result, some customers may see tracking updates showing delivery to an unfamiliar address. In most cases, your package will still arrive as expected.
What to do
- If your tracking shows an incorrect delivery a...
Fraudsters are increasingly attacking USPS by creating counterfeit, unpaid shipping labels — a scheme known as Mailer ID (MID) fraud. This is a growing industry-wide USPS issue affecting all shipping platforms, not specific to Mercari or your account security.
As a result, some customers may see tracking updates showing delivery to an unfamiliar address. In most cases, your package will still arrive as expected.
What to do
- If your tracking shows an incorrect delivery a...
Aug 23, 2026 at 3:55 AM UTC
Was your business affected by this Mercari outage?
Follow Mercari and route available status alerts to email or a team channel.