area: email
action: editsmtpserver
https://api.hypermail.com/api.php?apikey=YOURAPIKEYHERE&area=email&action=editsmtpserver
<response>
<success>SMTP Server Updated</success>
<smtpserverid>122</smtpserverid>
</response>
{
"success": "SMTP Server Updated",
"smtpserverid": "122"
}