Absolutely! You can add to your list whenever you want.
Just email email@example.com with what you got done. If you leave your subject blank, it will go into your calendar for today. Otherwise, just put the date in the subject like this: September 15. It will go into your calendar for that day.
If you're submitting entries for a team, just email
You can also add to your list by logging in. Just input your new accomplishment into the text box, and press "Enter."