Admins decide the type of confirmation method for new user accounts. No Confirmation Required speeds up the registration process by eliminating the user validation step. On the other hand, the two additional options available add additional layers of security by requiring the validation of an e-mail address.
Signup Confirmation Options
Select, from the Signup Confirmation (Admin Interface -> Settings -> User Settings -> Signup Confirmation) menu, appropriate verification method to confirm user registration.
No Confirmation required
The site will automatically activate accounts without requiring user validation.
Email Address Verification
After registering new users will receive an email with an activation link. Their accounts become active only after clicking the verification link.
If checked, the admin will have to manually activate new accounts from the Users management page (Admin Interface -> Users -> Site Users) then follow the steps as described in Email Address Verification.