Using reputed mail services for signup's.

[smog-root]

Update the existing signup flow to validate email domains. Restrict signups to users with email addresses from trusted providers (e.g., Gmail, Outlook). etc.

Extract the domain from the user's email during signup. Compare it against a predefined list of trusted providers. If the domain matches, proceed with the signup; otherwise, return an error.

i'm expecting a gssoc-ext with level3 and a hacktoberfest-accepted label!

@ankit071105

[github-actions[bot]]

👋 Thank you @smog-root for raising an issue! We appreciate your effort in helping us improve. Our team will review it shortly. Stay tuned!