Complex sentence: TheWineKone originated in July 2003 as a newsletter sent by e-mail to approximately 30 people, in the first edition of which he threatened those who received the newsletter that if they did not subscribe he would give them one last chance to subscribe.
Split into simpler sentences: TheWineKone originated in July 2003 as a newsletter sent by e-mail to approximately 30 people. In the first edition, he threatened those who received the newsletter that if they did not subscribe he would give them one last chance to subscribe.