Configure membership options to define how end users can join an account using a registration code, IP address, or email domain.

1. To allow end users to register with the account using a code, define the code that they enter in the registration form in the Registration Code text box. You can either enter a code in the text box or select the Generate Code button to generate a code that is entered in the text box.
2. To allow access by IP address, click Add IP Address.
3. Enter an IP address or CIDR range in the field.
4. Repeat steps 2–3 to add additional IP addresses or CIDR ranges.
5. To allow access by email domain, click Add Email Domain.
6. Enter an email domain in the field.
   Note: Zephr recommends that you enable email verification to ensure that end users use legitimate email addresses when registering. For further information on enabling email verification, see the

   Authentication

   topic.
7. Repeat steps 5–6 to add additional email domains.
8. Click Save.
   The following illustration provides an example of the Membership Options section that allows end user to use a registration code and automatically considers anyone with an email domain of zephr.com part of the account upon user registration: