stdClass Object ( [type] => https://mailchimp.com/developer/marketing/docs/errors/ [title] => API Key Invalid [status] => 401 [detail] => Your API key may be invalid, or you've attempted to access the wrong datacenter. [instance] => 9c4f68f5-edac-5e14-c299-8b3e72d0e577 ) mail sent
This is test page