anchor.diff:  
   `xpack.notification.email.html.sanitization.allow`::
   Specifies the HTML elements that are allowed in email notifications. For
  -more information, see <<email-html-sanitization, Configuring HTML 
  -Sanitization Options>>. You can specify individual HTML elements
  +more information, see {xpack-ref}/actions-email.html#email-html-sanitization[Configuring HTML 
  +Sanitization Options]. You can specify individual HTML elements
   and the following HTML feature groups:
   
   [[html-feature-groups]]
  
positive.code: 
  [[email-account-attributes]]
    `profile`;; 
    The <<email-profile, profile>> to use to build the MIME messages
    that are sent from the account. Valid values: `standard`, `gmail` and 
    `outlook`. Defaults to `standard`.
  
    `email_defaults.*`;; 
    An optional set of email attributes to use as defaults 
    for the emails sent from the account. See <<email-action-attributes, Email Action 
    Attributes>> for the supported attributes.
  
    `smtp.auth`;; 
    Set to `true` to attempt to authenticate the user using the 
  
negative.code: === Email Notification Settings
  You can configure the following email notification settings in 
  `elasticsearch.yml`. For more information about sending notifications 
  via email, see {xpack-ref}/actions-email.html#configuring-email-actions[Configuring Email].
  
  `xpack.notification.email.account`::
  Specifies account information for sending notifications via email. You 
  