Exploit Checker
This can't detect if the exploit has already been removed from the Email & accounts settings, since it's only removed locally, and not from the servers.
I have a different method of removing it, which removes it from the servers, and all PCs that may be using it.
Usually the exploit is added by mistake, and most people don't know how to use it. If you're the only one that's had access to your account since it was migrated, then you'll be fine.
If the exploit is active on your account, you can contact me and I can help you remove it. I also have a thread here with more info.