amazon fresh truck

An Amazon Fresh delivery truck in downtown Los Angeles. Amazon also is using the U.S. Postal Service for a grocery-delivery experiment in San Francisco. REUTERS

Now the letter carrier will deliver groceries.

Amazon.com Inc. AMZN +2.97% and the U.S. Postal Service, already partners in Sunday deliveries, have launched a trial to shuttle insulated containers of meat, dairy, produce, and other groceries to San Francisco customers’ doorsteps. The test could presage a broader national rollout, giving Amazon’s grocery drop-off service a much wider reach.

Through its AmazonFresh unit, the e-commerce giant today delivers groceries in its hometown Seattle, as well as Los Angeles and San Francisco. It is expected to introduce Fresh to additional markets in the coming months: Amazon lists job openings for produce-handlers in Avenel, N.J., about 25 miles outside Manhattan.

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