| Name | Type | Description | Notes |
|---|---|---|---|
| to | array<string,int> | Message counts keyed by destination (envelope `to`) email address. | [optional] |
| from | array<string,int> | Message counts keyed by sender (envelope `from`) email address. | [optional] |
| ip | array<string,int> | Message counts keyed by originating client IP address. | [optional] |