What problem does it solve? Managing a Feishu (Lark) mailbox manually through an AI assistant is error-prone: recipients must be resolved, HTML bodies must follow mail-client-safe formatting, and send operations require strict confirmation to avoid mistakes. This Skill provides a complete, safety-first command workflow for operating a Lark mailbox through lark-cli. ## Core Features & Use Cases - Full mail lifecycle: Draft, compose, send, reply, reply-all, forward, schedule, recall, and track delivery status of emails, with drafts as the safe default before any send. - Mailbox organization: Triage the inbox, read messages and threads, manage folders, labels, contacts, attachments, mail rules, signatures, and personal templates. - HTML writing standards: Built-in mail-safe HTML guidelines, an HTML lint command, and ready-made templates for newsletters, weekly reports, and resumes. - Use Case: Ask the assistant to draft a weekly team report email with inline images, review the draft link in Feishu Mail, then confirm sending and check delivery status. ## Quick Start Ask the assistant to draft an email to a colleague with a subject and body, review the returned draft link in Feishu Mail, and then confirm sending it.