Workspace > Auctions > Auctions, Actions > Winning Bid Email Notify.
PLEASE NOTE: Highlighting a row, or checking off the checkout box, is not tied to Actions > Winning Bid Email Notify.
This action will send to all records in the grid.
Use this action to notify your winning bidders at the end of your auction. If you wish to send to select bidders, filter the grid first to only include those bidders.