共享經濟平台近年透過數位媒合與市場機制成功提升服務效率與規模，但相較之下，如何在非金錢誘因條件下，使日常互助型共享服務能在真實生活情境中運作，仍缺乏具體的設計知識與實證探討。本研究聚焦於「共享配送（sharing delivery）」這一嵌入日常行動路徑的互助形式，探討在順路可行性、時間成本與社交不確定性等限制下，資訊系統如何促成低門檻且可持續的互助參與。本研究採用行動設計研究（Action Design Research, ADR）方法，透過前測問卷界定參與條件與疑慮，並於大學校園場域進行 Alpha 與 Beta 兩階段的原型導向訪談與逐輪設計修正。跨迭代整合顯示，非金錢互助的參與並非主要由動機強度所決定，而是首先受到「可行性判斷」所篩選；唯有當系統使順路成本與行動負擔清晰可判斷時，助人意願才可能被實際轉化為行動。在此基礎上，社群脈絡與信任中介機制可降低陌生互助的不確定性，而具有意義的非金錢回饋與回顧機制（recap）則有助於將單次助人行為轉化為可累積的參與價值。基於上述發現，本研究歸納出三項回應研究問題的設計原則，並具體化為六項關鍵設計機制，說明非金錢共享配送服務如何在日常情境中被操作化。同時，研究提出「必要－放大－維持（Necessary–Amplifying–Sustaining, NAS）」參與條件框架，作為整合社會交換、社會信任與資訊系統持續使用研究的實務分析視角，說明資訊系統如何透過降低感知成本、強化社會正當性與支持價值建構，使互助參與得以低門檻且可持續地運作。本研究的貢獻在於提出共享配送作為一種補充共享性的平台合作模式，並提供以設計為導向的知識體系，展示非金錢誘因互助服務如何在日常生活中被建構與維持，進而拓展共享經濟與資訊系統研究對於價值導向平台協作模式的理解。

While digital platforms have greatly improved efficiency in delivery and crowdsourcing services, limited design knowledge exists on how non-monetary mutual aid can be supported in everyday contexts. This study focuses on sharing delivery, a form of route-aligned helping behavior embedded in daily routines, and examines how information systems can enable low-threshold and sustainable participation under constraints such as time pressure, perceived effort, and social uncertainty. Adopting an Action Design Research (ADR) approach, the study first employed a preliminary questionnaire to explore participation conditions and concerns, followed by two iterative prototype-informed interview cycles (Alpha and Beta) conducted within a university campus setting. Findings indicate that participation in non-monetary helping is not primarily driven by motivational intensity but is first filtered through feasibility appraisal. When systems make incremental effort and route-related costs cognitively legible, helping intentions are more likely to translate into action. Social grounding and trust mediation further strengthen engagement, while meaningful reinforcement mechanisms support continued participation. The study derives three design principles and six key design features that demonstrate how non-economic incentive-based sharing delivery can be made workable in everyday life. In addition, the research proposes a practical Necessary–Amplifying–Sustaining (NAS) participation condition framework as a literature-informed analytical scaffold that integrates insights from social exchange theory, social trust research, and information systems continuance studies. The framework explains how information systems can progressively enable participation by reducing perceived costs, strengthening social legitimacy, and supporting meaning construction. This study contributes by introducing sharing delivery as a complementary model of platform-mediated cooperation and by providing a design-oriented knowledge base that illustrates how non-monetary mutual-aid services can be constructed and sustained in real-world contexts. More broadly, it extends sharing economy and information systems research by offering both conceptual clarification and actionable guidance for designing value-centered platform participation beyond purely monetized exchange.

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