It is quick and easy to get email alerts for announcements of funding opportunities, based on interest areas.
Skip down to “Select Agencies” and pick the agency/department you are interested in. You can also “Select Sub Agencies” if there are more particular search criteria you have.
All grant/funding sources can be found through Grant Forward.
You need to login with your Cornell netid to access the full features. First you set up a profile. Once you have a search saved, you can have alerts delivered to your email, with different frequency (every day, every Monday, 1st day of the month, etc).
Philanthropy News Digest (a free service of the Foundation Center) has a weekly RFP Bulletin you can subscribe to - http://philanthropynewsdigest.org/. That is also where you can sign up for alerts, after you set up a profile.