Instagram is testing new tools to make it easier for creators to earn money through its service. The app is now testing affiliate shops, a feature it first previewed at its Creator Week event in June, and a dedicated “partnerships” inbox.Affiliate shops are an extension of Facebook’s existing shopping features, which are already widely available. But the latest version of the storefronts allow creators to link to products that are already part of their affiliate arrangements. Creators will earn commission fees when their followers buy products from these shops (though the exact terms of these arrangements haven’t been detailed). The company says that for now the shopping feature will only be available to creators who are part of that affiliate program.Instagram is also testing new inbox features it says will make it easier for brands to connect with creators for sponsorships. Instagram DMs will get a dedicated “partnerships” section just for messages from brands. The compan