Email by 6 PM Please

If you are not going to make class on a given night, please email by 6 PM if possible. That's about as close to class that I will check my email. If you email after 6 PM, then I probably will not see it until after class. That would still be better than not emailing at all. I ask for the emails as a courtesy, so I know who to expect. Now if you are a person who only comes one night a week, then I don't expect emails on those nights that you would not normally show up. Perhaps the opposite, if you are going to show up a night that you usually don't then an email would be in order. Thank you all for your help with this matter.