Simply replace the unfilled areas such as "__" and "_[date]_" with your information.
As you all know, we have recently begun working on _[name of project]_. We are in the final planning stages, and desperately need some more people to help with certain areas. We have included the areas most in need of help below.
_[list areas where volunteers are needed]_
If you think you may be able to help, even for a short amount of time, with any of these areas, please give _[contact name]_ a call at _[contact number]_. Any amount of help will be greatly appreciated. We won't be able to pull this off without you!