Mercari incident

Service Notice: A Known USPS Industry Issue May Affect Some Tracking Updates

Mercari experienced a minor incident on August 23, 2026 affecting Shipping, lasting 19d 1h. The incident has been resolved; the full update timeline is below.

Started: Aug 23, 2026, 03:55 AM UTC
Resolved: Sep 11, 2026, 05:14 AM UTC
Duration: 19d 1h
Detected by Pingoru: Aug 23, 2026, 03:55 AM UTC

Affected components

Shipping

Update timeline

investigating Aug 23, 2026, 03:55 AM UTC

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 us 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 address, please contact Customer Support. - If you were charged a clearly incorrect shipping adjustment, please contact us as well. Thank you for your patience.
resolved Sep 11, 2026, 05:14 AM UTC

This incident has been resolved.