auto insurance

Hi,

I pay a higher rate for my mail car insurance because it is for work and I read on here somewhere that we are covered through the postal service in someway while we are working so that we would not have to pay a higher rate. The person that was saying this said they made a copy of this somewhere in the contract and has it on file with her insurance agent, anyone have any info on this.
Please help.

Thanks!

I didn't find the right solution from the Internet.

References:https://www.ruralmailtalk.ruralinfo.net/forum/general-discussion/auto-insurance/

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