![Gmail](https://static.wixstatic.com/media/101b12_edcf29352f0c4452914157b1746e668f~mv2.png/v1/fit/w_1000%2Ch_1000%2Cal_c/file.png)
Add + before the @ of the eMail address, e.g if the address is test@gmail.com then possible aliases are test+netflix@gmail.com, test+shop@gmail.com
Register to various services with an alias indicating the service. When you get a SPAM, you can easily track where your eMail address leaked from.