Here's the apology email:<p><i>Sent: Tuesday, November 1, 2011 4:56 PM
Subject: Clipper® Correspondence<p>Dear Clipper Cardholder,<p>On behalf of the Metropolitan Transportation Commission, the managing agency who operates the Clipper® program, I would like to apologize for an error that occurred this morning. You and approximately 1,700 other Clipper® customers received an e-mail that showed the e-mail addresses of all recipients. The purpose of the e-mail that was sent this morning was to inform you that your credit card is expiring in January. In no case was your credit card number or any other personal information disclosed.<p>We are aware of how this error took place and have taken steps to help see that it does not happen again.<p>Again, I am sorry for this mistake and for the concerns this has caused.<p>Sincerely,<p>Andrew B. Fremier
Deputy Executive Director, Operations
Metropolitan Transportation Commission
clipper@mtc.ca.gov
</i><p>Looking at the cc: list on the original email I received, I counted 2,766 email addresses.