I received an EQSL card from an Argentinian radio station through Zhonglian. (See example below.)

Since I didn't find any QSL card sending service systems similar to "eqsl.co.kr" or "QSLMaster™" in the email, I suspect that this is a personal automatic QSL card generation system set up by an amateur radio operator.
So, could anyone suggest any software or projects that can achieve this functionality? (Automatically read the Logbook of Constellations data, search for a callsign on QRZ.COM to find the email address, fill in the content for the QSL card, and automatically send emails)