2. The method of claim 1 , further comprising: 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.
2. The method of claim 1 , further comprising: 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. 19. The method of claim 2 , further comprising: updating the electronic message conversation data structure to indicate that a request electronic message has been sent to request resending of the prior electronic message.