test email check

testing
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] => dd57d9e7-2981-fdb4-3ccd-588017a4d69c ) mail sent

This is test page