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As of 2018 年 04 月 30 日, some features on USPS.com® are incompatible with past versions of browsers.Upgrade your preferred browser to the most current version to continue uninterrupted access and protect yourself with the latest security updates.

USPS.com Compatible Browser Versions1

Internet Explorer

Compatible Versions:11, Edge
 

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Google Chrome

Compatible Versions:65, 63.0.3239.108

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Mozilla Firefox

Compatible Versions:59, 58.0.1
 

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Safari

Compatible Versions:11, 10.1.2
 

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Firefox is a trademark of Mozilla.By clicking on the Firefox link above, you will be taken to a site hosted by Mozilla.

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