Altering your email is usually not a huge deal, however when it concerns Facebook, it's a bit more complicated due to the fact that your e-mail address is also your Facebook login mail ID. You can change your login mail ID on Facebook by navigating to the Facebook settings page and verifying your new email address.
How To Change Your Facebook Email
1. Search to Facebook.com and log in to your Facebook account
2. Click the "Account" button on top right corner of the screen. Click "Account Settings."
3. Scroll down to your e-mail address and click the "Edit" icon.
4. Click "Include another e-mail."
5. Enter your brand-new email address into the "Email" field and click "Conserve Modifications."
6. Input your Facebook password when prompted to confirm the modifications.
7. Visit to your e-mail account and open the confirmation message from Facebook. Click the "Verify" button within the message.
8. Click "Account," then "Account Settings." Click "Edit" beside "Email." Click the "Remove" button for your old e-mail address to finish the process of altering your login mail ID on Facebook.
And one more thing please don’t forget to share this awesome trick to use the How To Change Your Facebook Email with your friends.