Renders a subscription form for registered users only. If you want anyone to be able to subscribe, this is not what you want to use. Use the [groups_newsletters_subscribe] shortcode instead.
Attributes:
‘description’ : Text used to invite to subscribe, defaults to ‘Subscribe to our newsletters’.
‘description_class’ : CSS class applied, default: ‘description’.
‘description_style’ : Inline style applied, default: ‘padding-bottom: 1em;’.
‘user_confirm_message’ : Message confirming subscription, default: ‘Thank you. Your subscription is confirmed.’.
‘user_confirm_style’ : Inline style, default: ‘border: 1px solid #0c0; border-radius: 4px; background-color: #efe; padding: 1em;’.
‘user_unsubscribed_message’ : Message after unsubscribing, default: ‘Thank you. Your subscription has been removed.’.
‘user_unsubscribed_style’ : Inline style, default: ‘border: 1px solid #0c0; border-radius: 4px; background-color: #efe; padding: 1em;’.
‘log_in_message’ : Ask visitor to log in to subscribe, default: ‘Please log in to subscribe.’.
‘log_in_style’ : Inline style, default: ‘border: 1px solid #cc0; border-radius: 4px; background-color: #ffe; padding: 1em;’.
‘show_log_in_message’ : Whether to show the message, defaults to ‘yes’.
‘show_unsubscribe’ : Whether to show the unsubscribe option for subscribed users, defaults to ‘yes’.
‘subscriber_message’ : Shown to subscribed users. Default: ‘You are subscribed to our newsletters.’.