System sends explanation to old email indicating change, and link to interrupt change
User clicks on interruption link to stop change
This to stop scenario where an imposter manages to get access to someones account (via their laptop for example) and changes the email address, making it impossible for the real user to reset his password
This to stop scenario where an imposter manages to get access to someones account (via their laptop for example) and changes the email address, making it impossible for the real user to reset his password