No, it is not necessary to bind AliExpress to corporate Alipay. If you open a store on AliExpress, you can choose to use your personal Alipay account to receive payments and ship goods. However, in order to ensure transaction security, it is recommended that you use a corporate Alipay account to receive payments, which can increase your trust and avoid some unnecessary troubles. But whether you need to bind corporate Alipay needs to be judged based on your specific situation.