Skills（SKILL.md）は、AIエージェント（Claude Code、Cursor、Codexなど）に特定の能力を追加するための設定ファイルです。
詳しく見る →Send, read, and manage emails via Tuta (formerly Tutanota) encrypted email service. Use when user asks to send emails, check inbox, read mail, or do any email operations through their Tuta account. Triggers on phrases like email, send email, check inbox, Tuta, Tutanota, mail, read email, compose email.