Use precise search terms in your email client. Look for emails from , "Euro Truck Simulator" , or a key retailer like "SEAGM", "FastSpring", or "BMT Micro". Search for terms like "activation key" , "product code" , or "serial number" .
For those who, for some reason, cannot or choose not to use Steam, but have a valid code, there is a community-driven workaround to get the original, non-Steam version. euro truck simulator 1 email and activation code top
If you are looking for solutions, you likely purchased the game years ago, received a product key via email, and now, due to a new computer or a reinstallation, that code is required again. Use precise search terms in your email client