Google is lowering the limit of 50 users to 10 users in its Free Google Apps Standard Edition as of May 10, 2011 according to a notice received from the Google Apps Team. They will grandfather existing Google Apps Standard Edition accounts so it will affect only new accounts created after May 10, 2011. The yearly cost for a 50 user package has now gone from $0 to $2,500. Google Apps Standard Edition is an excellent Small Business Email solution. If you are considering to switch but haven’t done so, you should do so before May 10, 2011.
Note: As of December 6, 2012, Google Apps Standard Edition is no longer free.