It’s never a good sign when a company CEO feels compelled to apologize for a botched product (remember Tim Cook and Apple Maps?). In 2013, Yahoo CEO Marissa Mayer joined that exalted group when she had to issue a mea culpa for Yahoo Mail’s days-long outage that left about 1 million people without access to their inboxes. That’s just the tip of the iceberg, though, as Yahoo Mail users have been flooding the Web with complaints for months over the service’s redesign. Taking away the option to sort mail alphabetically by sender has seemed to inspire the most ire. A Change.org petition pleading for Yahoo to bring back the old Yahoo Mail now has more than 41,000 signatures.