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Services and Support

The CAPS Service Center is available to answer questions and assist with problems Monday through Friday, from 7:00 AM until 4:00 PM Pacific Standard time. Please contact the CAPS Service Center at:

Telephone 650-377-1334
FAX 650-377-5336
E-mail ssmctas@email.usps.gov
Address CAPS Service Center
US Postal Service
2700 Campus Drive
San Mateo CA 94497-9433

To apply for a CAPS account, please use the application forms available on this Web site.


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