RFP invitation email
Send it: when you issue the RFP.
What to include
- What you're buying and why, in two sentences
- The deadline for questions and for proposals, with time zone
- How to submit and who the single point of contact is
- A request to confirm whether they intend to bid
The ready-to-send wording for this and the other 4 letters is in the RFP Template Kit ($99).