During February 2026, Bottleneck103 developed a comprehensive Self-hosting Troubleshooting Guide for the inbox-zero repository, focusing on improving the onboarding experience for self-hosted deployments. The guide addressed common setup challenges such as container startup failures, database connection errors, OAuth configuration issues, and performance bottlenecks. Bottleneck103 utilized Markdown for clear, end-user-oriented documentation and applied DevOps and Docker expertise to ensure technical accuracy. The work aligned closely with product documentation standards and issue tracking, resulting in actionable guidance that reduces onboarding friction and support requests. This contribution demonstrated depth in troubleshooting and documentation, enhancing the repository’s support for self-hosted users.