[Problem] The objective of the present invention is to provide a processing program, processing device, and processing method for extracting, from social information that has been posted on the internet, information that satisfies prescribed extraction conditions, and making it possible to treat said information equally to an email exchange. [Solution] This social information processing device 10 is configured by installing a social information processing program on a computer 20. The social information processing device 10 is provided with: an email communication processing unit 30 that carries out email communication; a message extraction processing unit 44 that extracts, from social information posted on the internet, information that satisfies prescribed extraction conditions; and a display processing unit 50 that makes it possible to display, in the same user interface as the email from the email communication processing, social information extracted by means of the message extraction processing.
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