I signed up to SSC ages ago using an email address I had for years and thus was starting to get tons of spam and was missing a lot of SSC emails. As such, I created a new email address and updated my email address in my SSC profile.
This worked great for forum post replies, but unfortunately my user name was still my old email address. I expected this to not be a concern as I cannot change that value. I am still finding emails from SSC going to my old address. This is most notable with the newsletters and blogs that get posted which go to my old email.
My guess is those are going to my username while forum posts are tied to my email address. Is there a way to get this corrected? Either by changing the address newsletters and blogs go to OR to update my username?
The above is all just my opinion on what you should do.
As with all advice you find on a random internet forum - you shouldn't blindly follow it. Always test on a test server to see if there is negative side effects before making changes to live!