The rapid growth of digital technologies has transformed various aspects of modern life, including communication and information management. Digital transformation of mail systems has significantly influenced how individuals manage their correspondence. Traditional mail systems have gradually given way to digital alternatives, offering increased usability, efficiency and convenience. Among these digital innovations is the Kivra digital mailbox in Sweden, that provides users with a platform to receive and manage their mails, appointments as well as get receipts electronically. While the digital mailbox has been in existence for some time, previous research has established that perceived ease of use is an important factor influencing user acceptance and usage behavior of information technologies. However, very little research has been conducted to understand how that perception forms and changes over time especially with transformational technology like digital mailboxes. This study addresses this gap by exploring how users perceive the use of Kivra digital mailbox through the lens of Unified Theory of Acceptance and Use of Technology 2 (UTAUT2). The research questions guiding this study are “How do users perceive the use of digital mailbox system?” and “What factors influence users’ satisfaction and challenges when interacting with digital mailbox system?”A qualitative research method was employed, using semi-structured interviews with eight Kivra users residing in Sweden. The data were analyzed thematically, leading to five key themes: Convenience & Organization, Usability & Effectiveness, Privacy & Security, Environmental Impact and Recommendation.The findings indicate that users perceive Kivra as convenient, effective, and environmentally beneficial. Participants highlighted its speed, ease of use, secure access via BankID, and minimal technical demands. The platform was found to integrate smoothly into daily routines. However, some users reported occasional issues with BankID authentication and internet connectivity. Despite these challenges, Kivra’s timely notifications, intuitive interface, and overall utility were consistently appreciated.