Yahoo! Mail has more active users than Gmail; almost double in the US market. It's second only to Hotmail with over 300 million unique users. http://visualize.

Yahoo! Mail has more active users than Gmail; almost double in the US market. It's second only to Hotmail with over 300 million unique users. http://visualize.yahoo.com/mail/ http://visualize.yahoo.com/mail/ (see About, or Comscore's 2011 email market share report)