Hi,
some times ago this call was perfectly working, I used it to get the HTML body and subject of my MailUp templates. But since some months, the output is not XML anymore: now it's a simple text string and, for this reason, my XML output parsing function is not working anymore.
Below the method invocation:
$mailUp->callMethod($mailUp->getConsoleEndpoint() . "/Console/List/1/Email/1", "GET", $reqBody, "XML");