28. The memory device of claim 27 , wherein the operations further comprise: determining whether the electronic message conversation data structure is missing information pertaining to a prior electronic message that is known to have been sent in the electronic message conversation prior to the received electronic message; and in response to determining that the electronic message conversation data structure is missing information pertaining to the prior electronic message, sending a request electronic message to a human participant of the electronic message conversation to request that the prior electronic message be sent again.
28. The memory device of claim 27 , wherein the operations further comprise: determining whether the electronic message conversation data structure is missing information pertaining to a prior electronic message that is known to have been sent in the electronic message conversation prior to the received electronic message; and in response to determining that the electronic message conversation data structure is missing information pertaining to the prior electronic message, sending a request electronic message to a human participant of the electronic message conversation to request that the prior electronic message be sent again. 49. The memory device of claim 28 , wherein the operations further comprise: obtaining information pertaining to the particular electronic message including a sequence indicator that indicates an order in which the particular electronic message was sent in the electronic message conversation relative to other electronic messages in the electronic message conversation, and wherein determining whether the electronic message conversation data structure is missing information pertaining to the prior electronic message comprises: deriving, based at least partially upon the sequence indicator, a target sequence indicator that precedes the sequence indicator; and determining whether the electronic message conversation data structure is missing information, pertaining to the prior electronic message, that includes the target sequence indicator.