When storing Virtualmin users in LDAP, this setting allows you to have their email addresses added to the LDAP database as well. This is useful if your mail server or spam filter use the same database to deliver email.

The available options are :

- Yes using only `mail` attribute
  Each user's primary and extra email addresses will be stored in this attribute as separate values.

- Yes using `mail` and `mailAlternateAddress`
  Users' primary addresses will be stored in the `mail` attribute, and additional addresses in `mailAlternateAddress`.

- No
  Email addresses will never be stored in LDAP.

When this is set to Yes, Webmin will add LDAP `mail` attributes to each user it creates or modifies for their primary and additional email addresses. This is useful if you are using the same LDAP database with a mail server which uses that attribute to figure out where to deliver email.