# TransactionalEmailColumnEventFilters


## Fields:

  - `usageId` (ColumnFilter): Filter by the value of the 'usageId' field.
  - `eventType` (ColumnFilter): Filter by event type. This can be either 'OPEN' or 'CLICK'.
  - `eventSubType` (ColumnFilter): Filter by event subtype. This can be 'LINK_CLICKED' for click event types or 'MAIL_OPENED' for mail event types.
  - `userId` (ColumnFilter): Filter for user ID (technical account) of the client using the service.