This function retrieves the account's maximum email account quota size, in Mebibytes (MiB) format.

Important:

When you disable the Receive Mail role, the system disables this function.

{
  "apiversion": 3,
  "func": "get_max_email_quota_mib",
  "module": "Email",
  "result": {
    "data": 4294967296,
    "status": 1
  }
}