Upon release, "Slow Jamz" peaked at number one on the US "Billboard" Hot 100, which was the first number one song for Twista, West, and Foxx. The song was positioned at number 16 on the 2004 year-end chart in the United States. It also peaked at number three on the UK Singles Chart, and placed at number 47 on the 2004 year-end chart in the country. The song received a silver certification from the British Phonographic Industry (BPI). "Slow Jamz" received a nomination for Best Rap/Sung Collaboration at the 47th Annual Grammy Awards in 2005, and was nominated for Best Collaboration at the 4th BET Awards in 2004.