Last week quite a lot of Yahoo Mail users started complaining about issues when trying to access the service. Soon after that, the company confirmed that one of its Mail servers was acting up, and that the issue had proved to be much harder to fix than anticipated. Yahoo assured users that it had teams working on it round the clock to bring everything back up. The Mail issues seem to have been taken care now, and with all that done and dusted, Yahoo CEO Marissa Mayer took to the company’s official blog to apologize for the prolonged outage.