Otherwise uncategorizable properties of a message.
The date at which the message was read. Defaults to null if the message is freshly sent or delivered.
The date at which the message was seen (delivered) on backend. Default to null if the message is freshly sent by the SDK, always non-null if the message is delivered.
The date at which the message was seen by the customer (client). Defaults to null if the message was not yet seen by the customer.
Inferred status of message.