Early life, education, and early career
Joel grew up in Montreal, with three brothers. His family was an early adopter of computers, something that fascinated him. He graduated from the pre-university music program at Vanier College (he played bass), then he quit his philosophy studies at Concordia University after less than a semester, to start a publishing career. He worked in Montreal as a freelance music journalist and as publisher/editor of two music magazines, Arena Rock and Enrage. His first interview, in 1989, was of Tommy Lee.
Joel worked in 1999 and 2000 at Mamma.com, a meta search engine started in 1996, where he held the title of Director, Sponsorship and Advertising. In January 2001 he became Director of Marketing at Airborne Entertainment, a mobile content provider headquartered in Montreal. He credits an Unleash the Power Within conference in 2002 for the change in direction that lead to his success; he has been a speaker at a number of the organization's conferences since then.
In 2002, Joel joined Twist Image, a digital marketing company that was then two years old. He is now president of the company, one of four equal partners. He began blogging in September 2003, posting at Six Pixels of Separation – The Twist Image Blog. In May, 2006, he launched a weekly podcast. Both the blog and podcast focus on the intersection of digital marketing and personal branding.
In July 2006, Joel was named one of the twenty most influential authorities in the world on the topic of blog marketing by the UK-based research firm Onalytica. In January 2007, Marketing Magazine called Joel "Canada's Rock Star of Digital Marketing." In May 2009 he was named to the Top 40 under 40 in Canada.
By mid-2009, Twist Image had a second office, in Toronto, and employed 65 people. By October 2009 it had 90 employees. By the end of 2009, its clients included Home Depot, Microsoft, Scotiabank, TD Canada Trust, Fujifilm, and Dairy Farmers of Canada.
In 2007 and 2008, Joel was the host of Foreword Thinking: The Business And Motivational Book Review Podcast. In 2008 and 2009, he wrote a business column for the Montreal Gazette and the Vancouver Sun. In 2009, he authored a book by the same name as the blog and the podcast: Six Pixels of Separation. In 2009 and 2010 he had a column in enRoute, the in-flight magazine of Air Canada.
In May 2011, the Canadian Marketing Association elected Joel as the chair of its board of directors for 2011 and 2012. In 2013, Joel published Ctrl Alt Delete: Reboot Your Business. Reboot Your Life. Your Future Depends on It. The book covers five technology and marketing trends that Joel thinks business leaders must embrace.
Joel is a partner, with Greg Below, in the record label Distort Entertainment. The label, located in Toronto, Ontario, specializes in heavy music, hardcore, and post-hardcore. Artists and groups currently or previously represented by the label include Alexisonfire, Cancer Bats, Johnny Truant, Step Kings, and The Bronx.
Joel is married; he and his wife have three children. 
- Catherine McLean (October 20, 2009). "Social media can pull in clients". The Globe and Mail. Retrieved June 21, 2013.
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- Jamie O'Meara (March 29, 2007). "Babylon, P.Q. - Rock'n'Roll Joel". hour.ca. Retrieved June 21, 2013.
- Keith McDonald (2002). "Distort Entertainment's Mitch Joel: New Canadian Label Signing Heavy Bands". Metal-Rules.com. Retrieved June 24, 2013.
- "Mamma.com - About". Mamma.com. October 10, 1997. Archived from the original on October 10, 1997. Retrieved June 22, 2013.
- "Investor Relations". Mamma.com. November 10, 2000. Archived from the original on November 10, 2000. Retrieved June 22, 2013.
- "Executives". Airborne Entertainment. March 31, 2001. Archived from the original on March 31, 2001. Retrieved June 22, 2013.
- Flemming Madsen (July 23, 2006). "Who are the most influential authorities on "blog marketing"". Onalytica Blog. Retrieved June 22, 2013.
- Todd A. Ritter (June 4, 2009). "Experts sound the alarm on social media's growth, power". NJ.com. Retrieved June 22, 2013.
- Mitch Joel (January 10, 2007). "Old School Link Love From Marketing Magazine". Six Pixels of Separation - Marketing and Communications Blog. Retrieved June 22, 2013.
- Matt Semansky (November 18, 2009). "Twist Image". Marketing Magazine. Retrieved June 22, 2013.
- Brandon Terry (May 30, 2011). "CMA elects Joel, Hunter to lead board". Marketing Magazine. Retrieved June 22, 2013.
- Nick Morgan (June 11, 2013). "Mitch Joel And The Five Hottest Trends In Digital". Forbes. Retrieved June 21, 2013.
- Harvey Schachter (June 9, 2013). "Five ways to reboot your business". The Globe and Mail. Retrieved June 21, 2013.