After four years, DoorDash is ending its partnership with Walmart. Business Insider was the first to report the news. According to sources, DoorDash decided to end its partnership with Walmart because it was no longer beneficial and because the company wanted to focus on its long-term customer relationships.

The two companies have decided to part ways, according to a Walmart spokesman.

According to reports, DoorDash sent Walmart a 30-day notice and a letter to end their partnership. There will be a change in September.

A DoorDash spokesman said in an email that they would like to thank Walmart for their partnership and would like to continue to build and provide support for merchants in the years to come.

In April of last year, Walmart began delivering groceries to customers in the Atlanta area. The partnership expanded to every state in the country.

Walmart has focused on building out its own delivery efforts even though it has partnerships with third-party delivery services. According to Insider, Walmart is acquiring Delivery Drivers, which is the company behind Walmart's platform that sees gig workers deliver orders to customers. According to a Walmart spokesman, the company's largest delivery service provider is the Spark platform, which accounts for 75% of Walmart deliveries.

DoorDash's business-to-business service that provides drivers to merchants through their own website or app has been built out.

While DoorDash's partnership with Walmart is coming to an end, the company has geared up to collaborate with another brand. DoorDash Drive is in the early stages of testing a service that will allow DoorDash drivers to pick up and drop off items at customers' homes. The test service is available in several cities in the US.

DoorDash has been testing a package return feature that will allow customers to return items to the post office.

Walmart did not reply.

A statement from DoorDash was added to the story.

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DoorDash is testing a feature that lets you return packages to post offices, FedEx or UPS