Techniques related to efficient transport of data encoded using multiple templates are disclosed. A sending computing device sends an internet message including internet message segments toward a receiving computing device. The internet message stores information about a data object that includes property types corresponding to property values. A portion of the data object includes multiple instances of a particular property type, and each instance corresponds to a property value. The internet message segments store the property values according to multiple templates, and each internet message segment corresponds to a template. Among the multiple templates is a particular template for the portion of the data object that includes the multiple instances of the particular property type. The multiple templates include fields that correspond to field identifiers. Based on a property-type-to-field-identifier mapping, a corresponding property type can be determined for each property value that is stored in the internet message segments.