mailing_page_test
Post a message to the test mailing list, given with the id argument.
The page does not need to be published. The sender must be allowed to use mod_mailinglist and view the page. The mailing is queued for immediate sending.
The on_success argument decides which actions are triggered after the page has been sent.
The required id argument identifies the page to send. on_success can be
repeated. The action resolves the named mailinglist_test resource and queues
the mailing with is_send_all, so all active test recipients receive it.
{% button text="Send test" action={mailing_page_test id=id on_success={reload}} %}
An error is shown when the test list is missing or the current user is not allowed to send the page.