Altering your e-mail is usually not a big offer, however when it concerns Facebook, it's a bit more complicated since your e-mail address is likewise your Facebook login mail ID. You can change your login mail ID on Facebook by navigating to the Facebook settings page and confirming your new email address.
Change Facebook Login Email
1. Browse to Facebook.com and log in to your Facebook account
2. Click the "Account" button at the leading right corner of the screen. Click "Account Settings."
3. Scroll down to your e-mail address and click the "Edit" icon.
4. Click "Add another e-mail."
5. Enter your brand-new e-mail address into the "Email" field and click "Conserve Modifications."
6. Input your Facebook password when triggered to validate the changes.
7. Log in to your e-mail account and open the confirmation message from Facebook. Click the "Confirm" 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 changing your login mail ID on Facebook.
And one more thing please don’t forget to share this awesome trick to use the Change Facebook Login Email with your friends.