On the Security page click User login settings button to create user self-register page or password reminder, change password pages, encrypt passwords.

Click Choose fields ... button to select fields that will appear on the registration page.

Do not forget to choose a field where user email is stored in the Email settings section if you are going to use Send email to user or Remind password page options.

Send activation link - email with activation link will be sent after the registration. The purpose of the activation link is to ensure that the user signs up with a real, active email address that they own. This limits the number of times someone can sign up, and prevents people who have been booted off a site from signing up again multiple times with fake email addresses. User access is denied until activation link is open in the browser.

You can select one of your fields or create new one where activation flag will be stored. This field needs to be numeric (Number, INT or TINYINT).

Restrict weak password - this option allows to restrict using simple passwords. You can select minimum password length, number of unique characters, digits or symbols.

Encrypt passwords - If you choose to encrypt password, Password reminder page will reset your password and send it to user.

Password reminder page:

Change password page:

In the Email settings you can enter email which will be used to send emails to users and define settings of the custom mail server. On the screenshot shown below you can see the example of the SMTP server settings. Note that SMTP server and SMTP server port settings may differ from the stated above. Contact your Mail Service Provider to get necessary information.

To send emails via Gmail, use the following settings: