Returns email credit summary for an account in the database via an http form post.
| Field | Max Length | Required | Notes |
|---|---|---|---|
| response_type | false | Default results will be returned in XML. Set this field value to json to return results in JSON format | |
| apiusername | true | API User Name and password are assigned by AllClients | |
| apipassword | true | API User Name and password are assigned by AllClients | |
| accountid | true |