:wave: Welcome to SA jeanmv!!! :wave:
Whichever email acct you use for sweeps doesn't determine if you will win or not, but there are some things to keep in mind:
Some sites will reject "throwaway" accts - it's rare though.
It's a real PITA to try to change your addy after you've signed up with some companies {sponsors} most do have a way to change your addy in your profile, but a few don't {can't remember who right now :scratch:} so use an addy you know you will keep.
If you decide to share your addy on a public forum, use at for @ and dot for . so the spiders won't mine it and sell your addy to spammers.
The best thing to do is to set up an acct JUST for sweeps, keeping your private addy for friends/family.
hth, gl, amy :sunny: