Amazon OneLink

Amazon OneLink is Amazon's official answer to cross-border affiliate link routing, and unlike every other tool here, it's free, built into the Amazon Associates program, and needs no third-party account. Setup involves linking your regional Associates accounts in Associates Central and setting a default tracking ID per approved country, then adding a JavaScript snippet to your site. From there, OneLink detects each visitor's location and redirects Amazon links to their nearest supported storefront, which Amazon lists as covering Australia, Canada, France, Germany, Italy, Japan, the Netherlands, Poland, Saudi Arabia, Singapore, Spain, Sweden, and the UK, alongside the US. The key limitation: OneLink can redirect a visitor to any of those storefronts, but you only earn commission in countries where you hold an approved, linked account; visitors sent to a marketplace you haven't joined generate nothing for you. It also only works where JavaScript can run, so it functions on blogs and websites but not in email newsletters, social captions, or YouTube descriptions. Some users report the redirect occasionally misfiring to a dead product page, a known limitation that has led some affiliates to pair it with a third-party tool like Geniuslink for more reliable routing.