Usps Customer Service Number Hours. If you have other shipping reference numbers. The usps customer care number:
Email usps for all questions related to your missing mail, technical issues, or general usps services. If one of the below phone numbers didn’t work then please try the next number. If it's after hours or if calling isn't convenient, you can also email them at usps technical support @ mail ps (dot) cust help (dot) com.
There you will be able to receive the most qualified support, no matter how difficult your situation is.
Salt lake city, ut — the u.s. Usps ® customer service call: Informed delivery support if you need help with your informed delivery service, please email informed delivery user support. Keep pressing 0 through all of the messages