The Virginia Court of Appeals on Tuesday upheld the nation’s first felony conviction of illegal spamming.

Jeremy Jaynes, of Raleigh, N.C., considered among the top 10 spammers in the world at the time of his arrest, used the Internet to peddle pornography and sham products and services, prosecutors said. Thousands of people fell for his scam, grossing Jaynes’ operations up to $750,000 per month, investigators said.