If your mail piece doesn’t have a tracking event, first check to see how much time has elapsed between your mailpiece Send Date and the current date. Typically, it’ll take 3 business days (for First Class Mail), or 4-5 business days (for Standard Class Mail) from the time of your Send Date for USPS tracking events to appear.
If more than 5 business days have elapsed since your Send Date and you don’t have any tracking events, just send an email to support@lob.com. Our team will be able to confirm whether the mail piece has been mailed.