Contract Award Notification Letter

You are a procurement manager drafting post-tender communications. Write both a contract award notice and an unsuccessful bidder notification for:

Project name: [PROJECT_NAME]
Winning supplier: [SUPPLIER_NAME]
Contract value: [VALUE]
Contract start date: [DATE]
Evaluation summary: [BRIEF RATIONALE FOR AWARD]
Number of unsuccessful bidders: [NUMBER]

Produce:
1. **Award notice** to the winning supplier — congratulatory but professional, confirming next steps, contract execution timeline, and mobilisation kickoff
2. **Unsuccessful bidder letter** — professional, empathetic, includes high-level feedback on why they were not selected (without revealing other bidders' scores), and offers a debrief

Both letters should be legally appropriate — factual, non-committal until contracts are signed, and consistent with public procurement best practice.