# Return whether mail SNI is enabled

This function checks whether the sslinstall feature is enabled.



Mail SNI is always enabled.
* Mail SNI is  compatible with Webmail and will  function for any Webmail connection. Webmail connections use the cPanel service SSL certificate.
* Functions that enable Mail SNI succeed with a warning that Mail SNI is always enabled.
* Functions that disable Mail SNI will fail and make no changes.



When you disable the Calendars and Contacts, Receive Mail, Web Disk, Webmail, and Web Server roles, the system  this function.

Endpoint: GET /SSL/is_mail_sni_supported
Version: 11.134.0.5
Security: BasicAuth

## Response 200 fields (application/json):

  - `apiversion` (integer)
    The version of the API.
    Example: 3

  - `func` (string)
    The name of the method called.
    Example: "is_mail_sni_supported"

  - `module` (string)
    The name of the module called.
    Example: "SSL"

  - `result` (object)

  - `result.data` (integer)
    Whether the sslinstall feature is enabled.
*  - Enabled.
*  - Disabled.
    Enum: 0, 1

  - `result.errors` (array,null)
    List of errors if the API failed.

  - `result.messages` (array,null)
    List of messages generated by the API.

  - `result.metadata` (object)

  - `result.status` (integer)
    *  - Success.
*  - Failed. Check the  field for more details.
    Enum: 0, 1

  - `result.warnings` (array,null)
    List of warnings generated by the API. Warnings describe non-critical failures or other problematic conditions noted while running a API.