Its never a good idea to submit your email id online if you are not sure or don’t trust it. You can always create some random email id fake ones and use it. However if you are running short of fake email id , Spam Trap is one software that you need.
This is a very simple application which gives you 5000 email id in like a minute max. It takes some random characters like A to Z, Numbers etc and depending on the domain name it can fake email id. Here is snapshot :-
So you can use it any where you want and safe yourself against spam. Download Spam Trap