Most RFP invitation emails should include a greeting, introduction and summary, highlights, next steps and closing. This is a list of Invitation for Bids and Request for Proposal opportunities currently available with the University of Kentucky Procurement Services.Submit an RFA Service Request through the King County E-Procurement. Portal. Click here for construction projects currently out to bid. Click here for Request for Proposal projects currently out for proposals. Enterprise is seeking Request for Proposals (RFP) for the King County PSTAA General Child Care Facilities Fund (GCCFF). Below is our go-to RFP cover letter template that can help you outshine your competitors. Typically, there are five key points you want to cover in your letter. 1 Complete Service Request in E-Procurement. Fill out the 'Work Item' list for BDCC subcontracting and apprenticeship information.