You can change your email address as you like. Write any username or generate a new one. You can also choose any domain name from the drop-down list or use the search (example: 'email*com' or '.com').
id How To Smart Hacker Account 1 Email Multiple Using Facebook Create Previous settings links:
Go to the specific mailbox: https://firstname.lastname@example.org
Email Generator with a specific domain and random user: https://generator.email/mail-temp.com