Turn one Gmail address into many, add a plus sign and a descriptor after it and Gmail will ignore the plus sign and anything after it.
For example: youremail netflix@gmail.com or youremail junkmail@gmail.com
You'll get the email and have the choice of how to handle it, but with this setup you can easily setup automatic filters to help keep your inbox clear or recurring emails like bills or automatically tag junk mail that gets through to your inbox.