There are two parts to an MSN Hotmail account: your username, or User ID, and your email address. Your User ID is assigned to you when you sign up for a Hotmail account and is based on the information you enter at the time of sign-up. When you send an email, your User ID shows up in the “From” field in your recipient’s inbox. It is not the same thing as the email address; the format in the “From” field is usually the User ID followed by the email address. You can view your User ID from your Hotmail profile. Tips Writer Bio

How to Find Out My Hotmail User ID  4 Steps  - 94