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受信トレイゼロ

4D(削除、委任、延期、実行)とバッチ処理によるバックログ一掃で受信トレイをゼロに保つスキル。メールが溜まりすぎた人や、受信トレイをToDoリスト代わりにしている人に最適。

受信トレイゼロ とは?

このスキルは、受信トレイを「処理待ちキュー」として捉え、メールのバックログを体系的にゼロにするための手法を提供します。コアとなるのは「4D(Delete, Delegate, Defer, Do)」の判断フレームワークで、各メールに一度だけ触れて即座に決定を下す「タッチワンス」原則を徹底します。具体的には、大量の明らかなメール(ニュースレターなど)を一括アーカイブし、残ったメールに4Dを適用。2分未満で対応できるものは即座に処理し、それ以外はタスクシステムに移すことで、受信トレイを常に未処理メッセージのみに保ちます。また、1日2〜3回の固定ウィンドウでバッチ処理し、通知をオフにして集中力を保護する方法や、購読解除、フィルタ/ルールの活用、最小限のフォルダ構成など、持続可能な管理体制を解説。Claude Code、Cursor、CodexなどのAIエージェントが、ユーザーのメール処理ワークフローを構築・実行するための明確な手順を提供します。同スキルは、返信メールの下書き作成や継続的なサポートキューの優先順位付けには使用せず、それらは別スキル(email-triage)に委ねます。

対応~Claude Code~Codex CLI~Cursor
npx skills add https://github.com/SkillMedev/skills/tree/HEAD/skills/inbox-zero

お気に入りのAIに質問する

このエージェントスキルを事前に読み込んだ状態で新しいチャットを開きます。

ドキュメント

受信トレイゼロ は何をしますか?

受信トレイゼロとは、単に空の受信トレイを目指すことではありません。それは明晰な心を得ることです。受信トレイは処理待ちキューであり、保管システムやToDoリストではありません。このスキルは受信トレイをクリアにし、それを維持します。

コアアイデア

あなたの受信トレイには未処理のメッセージだけを置くべきです。メールを見たら、それは受信トレイに残ってはいけません。あなたは決定を下します。各メールに一度だけ触れてください。

4D

すべてのメールに対して、すぐに次の4つの決定のうち1つを行います:

  • 削除(またはアーカイブ)- アクション不要、将来の参照も不要。ほとんどのメールはこれに該当します。容赦なく行いましょう。後でアーカイブを検索すればいつでも見つけられます。
  • 委任- 他の誰かが担当すべきもの。明確なコンテキストと期限を添えて転送し、受信トレイからアーカイブします(必要に応じて引き継ぎを別の場所で追跡)。
  • 延期- アクションは必要だが今ではない、または2分以上かかるもの。タスクシステムまたは「今日/今週」フォローアップラベルに移動し、アーカイブします。アクションはタスクに存在し、受信トレイにはありません。
  • 実行- 2分未満で完了するなら、今すぐ処理してからアーカイブします。1分の返信を延期することは、それを実行するよりもコストがかかります。

バックログの処理

  1. 送信者または件名で並べ替え、類似アイテムをまとめて処理します。
  2. 明らかなものを一括アーカイブ - ニュースレター、古い通知、既に解決したスレッドなど。「30日以上前のすべてを選択」して一括アーカイブしても安全なことが多いです。
  3. 上から下へ処理し、残った各メッセージに4Dを適用します。後戻りはしません。
  4. 処理中に深い作業に引き込まれない - 「実行」アイテムが膨らんできたら、「延期」に変更して進み続けます。処理と実行は別のモードです。

ゼロを維持する

  • メールをバッチ処理する - 1日2〜3回の固定ウィンドウで処理し、常時チェックしないようにします。ウィンドウ間は通知をオフにします。
  • 容赦なく購読解除する - 読まないニュースレターは繰り返しノイズとなります。週に10分かけて購読を解除しましょう。
  • フィルタ/ルールを使用する - 予測可能な送信者(CI、領収書など)を自動アーカイブまたはラベル付けして、受信トレイをスキップさせます。
  • テンプレート/定型応答 - 繰り返しの返信に使用します。
  • アーカイブ用フォルダは1つ - 検索はフォルダ分けに勝ります。複雑なフォルダツリーは作らないでください。

フォルダ/ラベルの設定(最小限)

受信トレイ        -> 未処理のみ
アーカイブ         -> その他すべて(検索可能)
フォローアップ     -> 誰かを待っている/延期されたアクション(オプション)

簡単な日常ルーティン

  • 朝のウィンドウ: ゼロまで処理し、各メッセージに4Dを適用。
  • 昼のウィンドウ: 到着分をクリアし、簡単な返信を送信。
  • 終業時: 最終パスでゼロに。延期アイテムは既にタスクリストに存在。

アンチパターン

  • 受信トレイをToDoリストとして扱う - 優先順位も期限もなく、他人がそれを埋めていくもの。
  • メールを読んで「後で対応する」と未読のままにする - 結局5回も触れることになります。
  • メールを常にチェックする - 集中力を粉々にします。バッチ処理しましょう。
  • 40ものフォルダを作る - ファイリングに検索以上の時間を費やすことになります。

Individual skills in this repo

This repo contains 19 individual skills — each has its own dedicated page.

SkillMedev/skills

Designs REST API surfaces - resource naming, HTTP method and status-code semantics, error shapes, pagination, and filtering - and delivers an endpoint spec a consumer can build against without asking questions. Use when someone asks "how should I name this endpoint", "what status code should this return", "should this be PUT or PATCH", "how do I paginate this list", or is reviewing an API before it ships to external consumers. Do NOT use for planning breaking-change rollouts and deprecation windows - use api-versioning-strategist instead; for GraphQL type and resolver design - use graphql-schema instead; for generating client SDKs from an existing spec - use api-client-generator instead; for designing inbound webhook endpoints - use webhook-receiver-hardener instead.

SkillMedev/skills

Produce an accurate, properly timed caption track (SRT or WebVTT) from a video's audio - transcribing or aligning to the voiceover script, timing cues to speech, and enforcing line-length and reading-speed rules so captions are readable and in sync. Use when someone says "generate captions", "make subtitles from the audio", "transcribe and caption this", "export an SRT or VTT", "the captions are out of sync", or "the subtitles flash by too fast to read". Do NOT use to burn-in, style, reframe, or position an existing caption track for a platform (9:16, brand styling, safe areas) - that is social-video-formatter; do NOT use to animate text word-by-word as a motion graphic - that is kinetic-typography; do NOT use to write the spoken script in the first place - that is narration-script.

SkillMedev/skills

Turns data and charts into a decision-driving narrative structured as headline finding, trend, implication, and recommended action - with finding-led chart titles, context for every number, annotation guidance, and honest flags on any conclusion the data cannot support. Use when someone says "turn these numbers into a story", "what's the takeaway from this data", "help me present these results to leadership", or has charts but no narrative. Do NOT use for compressing a long document into a one-pager - use executive-summary instead - or for running the analysis that produces the findings - use eda-playbook instead.

SkillMedev/skills

Use when a task needs live or historical money data - "convert USD to EUR", "current/past exchange rate", "FX rate on this date / over this range", or "current price of Bitcoin/Ethereum, market cap, 24h change". Frankfurter (ECB reference rates, no key) is the FX default; CoinGecko's free keyless tier covers crypto. Do NOT use for stock quotes or equities - no keyless stock API survives verification, say so instead of guessing; do NOT use for country economic indicators like GDP or inflation series - use government-open-data instead; if the request is a vague "I need live data", route through public-data-api-picker.

SkillMedev/skills

Builds a driver-based FP&A operating model linking business inputs to P&L, balance sheet, and cash flow outputs. Use when building an annual plan, preparing investor materials, running scenario analysis, or stress-testing the business.

SkillMedev/skills

Use when a task needs live geographic lookups - "geocode this address", "what's at these coordinates" (reverse geocoding), "lat/lon for this city", "which country/state is this ZIP or postal code in", or "country facts: capital, currency, population, flag". Nominatim (OpenStreetMap) is the geocoding default; Zippopotam for postal codes; APICountries for country facts. All keyless. Do NOT use for weather at a location - use weather-climate instead; do NOT use for country-level statistics over time (GDP, population trends) - use government-open-data instead; if the request is a vague "I need live data", route through public-data-api-picker.

SkillMedev/skills

Runs the full Getting Things Done loop - capture, clarify, organize, reflect, engage - building a trusted system of context lists, a projects list with defined next actions, and a weekly review habit. Use when someone says "I'm overwhelmed and things are slipping through the cracks", "set up GTD for me", "help me do a brain dump and organize it", or "my to-do list is a mess". Do NOT use for just running the weekly review ritual itself - use weekly-review instead - or for clearing an email backlog - use inbox-zero.

SkillMedev/skills

Write landing-page copy section by section - hero, social proof, features-as-benefits, objections, CTA - leading with one promise and proving it down the page. Use when someone asks "write my landing page", "improve my hero headline", "what should the homepage say", "turn these features into benefits", or is shipping a new page for a launch or campaign. Do NOT use for testing and optimizing an existing page's conversion rate - use landing-page-cro instead; for the one-line claim itself use positioning-statement; for the full message ladder use messaging-hierarchy.

SkillMedev/skills

Improves an existing landing page's conversion rate through evidence-first CRO - audit heatmaps and recordings, write structured hypotheses, prioritize with ICE scoring, and run one-variable tests to statistical significance. Use when someone asks "why isn't my landing page converting", "audit this page before we scale spend", "which A/B test should we run first", or after a CVR drop or ahead of a paid-traffic push. Do NOT use for writing a new landing page from scratch - use landing-page-copy instead. Do NOT use for auditing the ad accounts sending the traffic - use paid-acquisition-audit instead. Do NOT use for reading the results of a finished experiment - use ab-test-analyzer instead.

SkillMedev/skills

Runs structured coaching sessions using values clarification and the GROW model, ending every session with one committed action, a deadline, and an if-then plan for the likely obstacle. Use when someone says "I feel stuck in my life", "help me figure out what I want", "hold me accountable to my goals", or "coach me through this decision". Do NOT use for building a stress toolkit - use stress-management instead - or a journaling practice - use journal-framework; for a standing goal-tracking system, use goals-accountability. Coaching, not therapy: signs of clinical distress route to a licensed professional.

SkillMedev/skills

Adapts English content for a target language and region - swapping idioms, setting the right formality register, replacing cultural references, converting dates, units, and currency - and delivers the localized text with a notes column explaining each adaptation and flagging what needs a native reviewer. Use when someone asks "localize this copy for the Japanese market", "adapt our marketing copy for the Mexican market", "make this translation sound native instead of literal", or a literal translation reads foreign, stiff, or risky. Do NOT use for auditing in-product UI text quality - use ux-writing-audit instead.

SkillMedev/skills

Turns a natural-language video brief into a complete, ready-to-preview Remotion composition - extracts duration, scenes, brand colors, aspect ratio, and real copy; plans the frame budget; and writes data-driven React/TypeScript using useCurrentFrame, interpolate, spring, AbsoluteFill, and Sequence, registered in Root.tsx. Use when someone says "build a 20-second product demo video", "animate a feature walkthrough", "write the Remotion code for this marketing clip", or wants a scene-by-scene composition they can scrub in Studio. Do NOT use for rendering, iterating, or batching the finished MP4 - use remotion-render instead - or for installing and scaffolding the project - use remotion-setup instead.

SkillMedev/skills

Scaffolds a new Remotion video project wired for Claude Code Agent Skills - Node check, create-video scaffold, skills install, folder conventions, Google Fonts, and a smoke-test render. Use whenever someone wants to start making videos with Remotion and Claude, even just "make product videos with Claude.

SkillMedev/skills

Classifies incident severity (SEV1-4) using impact, scope, and urgency signals and decides who to page. Use when an alert fires or a report comes in and a severity call must be made quickly.

SkillMedev/skills

Use the Skill Me catalog from inside any conversation - discover, install, and manage Claude skills through the Skill Me MCP, and load installed skills automatically each session.

SkillMedev/skills

Write one platform-native caption from a topic and brand voice, with a front-loaded hook, native length, and a single earned CTA. Use when the user gives a topic (and optionally brand voice or a described image/video) and asks for an Instagram, LinkedIn, X/Twitter, or TikTok caption. Do NOT use when the user wants a dedicated standalone LinkedIn post - use linkedin-post-writer instead; or a multi-post X thread - use tweet-thread-builder instead; or to adapt one existing piece of content into versions for several channels - use cross-platform-reformatter instead.

SkillMedev/skills

Reframe and export a finished video for social platforms - 9:16 ↔ 16:9 cropping, burned-in captions, a platform-native first frame, loop design, and per-platform specs (aspect, length, safe areas) for TikTok, Reels, Shorts, X, and LinkedIn. Use when someone says "make this vertical", "crop to 9:16", "format for TikTok/Reels/Shorts", "add captions/subtitles", "why is my video cut off on mobile", "resize for Instagram", or "export for social". Do NOT use when the question is about the storyboard or shot order before any video exists (use video-storyboard); the animation craft of how elements move (use motion-design-principles); animated word-by-word caption styling (use kinetic-typography); palette, contrast, or lighting (use motion-color-and-light); directing the product-demo content and screen choreography (use product-demo-director); or scoring, beat-syncing, or audio (use sound-and-music-sync) - this is the craft layer that decides WHAT to format for the feed, then hands a concrete spec to remotion-compo...

SkillMedev/skills

Writes and tunes PySpark jobs - join strategy and broadcast size limits, shuffle-partition sizing, skew diagnosis and salting, UDF avoidance, caching, and output file layout - with concrete size and skew thresholds. Use when someone asks "why is my Spark job slow", "should I broadcast this join", "one task takes forever while the rest finish", "my job OOMs during a join", or is writing a new PySpark ETL job. Do NOT use for Kafka topic, consumer-group, or streaming-pipeline design - use kafka-pipelines instead; do NOT use for single-machine dataframe work that fits in memory - use pandas-expert instead.

SkillMedev/skills

Builds clean, performant, accessible SwiftUI views with correct state ownership, scoped invalidation, and smooth list scrolling, and reviews existing SwiftUI code against a concrete frame-time and re-render budget. Use when someone asks "why does my SwiftUI list stutter", "should this be @State or @Observable", "my whole screen re-renders when one row changes", "how do I animate this transition", or wants a SwiftUI view built or refactored. Do NOT use for cross-platform React Native apps - use react-native-pro instead; do NOT use for Flutter widget trees - use flutter-widget-architect instead; do NOT use for Android Compose UIs - use jetpack-compose-builder instead.

関連スキル