When a company you follow has a new filing, you can now receive notifications by text (not just e-mail) at conferencecalltranscripts.org. As far as I know, that's the only site that provides that service, and it's free. It's also still the only site I know of that provides free notifications for Canadian company filings.
Because you use the site a lot, the returns I get for the time I put into it are satisfactory. As a result, new features are being dreamed up and are on the way. If you have any suggestions for how the site might be more useful, please feel free to let me know either by commenting here, tweeting me or e-mailing me.