Inbox zero: the method, the 5 steps, and how I use Claude to triage Gmail (free skill)
Inbox zero is Merlin Mann's email method: process every message with one of five actions (delete, delegate, respond, defer or do) so your inbox stops being a to-do list. The "zero" is about attention, not message count. Claude can do the sorting for you in Gmail with a free triage skill.
Most inboxes turn into a to-do list nobody wrote on purpose. Here’s what inbox zero actually is, the five steps, how to do it in Gmail, and the read-only Claude skill I made for the sorting part.
What inbox zero actually means
Inbox zero comes from Merlin Mann, who wrote about it on his productivity site 43 Folders and set out the idea in a Google Tech Talk in 2007 (MIT Sloan Management Review).
The most misunderstood part is the “zero”. It doesn’t mean zero messages. As TechTarget and Asana both explain it, the zero refers to how much of your attention the inbox takes up. The point is to stop using email as a to-do list, deal with each message once if you can, and get back to real work.
The inbox zero method in 5 steps (copy it)
Mann breaks every decision about an email into five actions. Here they are as a checklist you can keep next to your inbox:
Inbox zero: for each email, pick one
1. Delete (or archive): no action needed? Get it out of the inbox.
2. Delegate: someone else should handle it? Forward it, then archive.
3. Respond: can you answer in a couple of minutes? Reply now, then archive.
4. Defer: needs real work? Move it to a "to respond" place and schedule time.
5. Do: is it a quick task? Do it now, then archive.
Habits: process in batches, not all day. Close the inbox in between.The five actions
- Delete or archive. Most email needs nothing from you. If you might need it later, archive it. If not, delete it.
- Delegate. If you’re not the right person, send it to the person who is.
- Respond. If a reply takes a couple of minutes, do it now.
- Defer. Bigger replies go into one “to respond” folder or label, with time set aside to work through it.
- Do. Small tasks that arrive by email get done straight away.
Mann’s tips are mostly about habits: don’t leave email open all day, and treat processing as its own step, done every hour or two at most, rather than living in your inbox (43 Folders, TechTarget).
Inbox zero in Gmail
You don’t need a special app. Gmail’s built-in tools cover the five actions:
- Archive removes a message from your inbox without deleting it, so it stays searchable. This is the main inbox zero button.
- Labels can stand in for Mann’s folders, for example one “To respond” label.
- Snooze brings an email back at a time you choose, which works for Defer.
- Filters can keep newsletters out of the inbox.
The hard part is making the same decision fifty times in a row.
Where AI helps (and where it shouldn’t)
Sorting a full inbox is tiring because every email needs a small judgement: is this urgent, is it mine, is it real? That’s where an AI assistant helps. It can read a batch of recent emails, suggest a bucket for each, and say why. The decisions that matter should stay with you, which is why the skill below suggests and doesn’t act.
Triage Gmail with Claude: the five buckets
I made a free Claude skill for this: the Gmail Inbox Triage Skill. You say “Triage my inbox.” Claude reads your unread Gmail (by default from the last 48 hours, up to 50 threads) and sorts each thread into a bucket, one line each: sender · subject · why it’s there · what to do.
| Skill bucket | What goes in it | Closest inbox zero action |
|---|---|---|
| Reply today | A person is waiting on you, a VIP wrote, or a stated deadline is within a working day | Respond / Do |
| This week | Needs a reply or action, but not today | Defer |
| Waiting on | You already replied or asked, and someone else has the next move | Delegate (follow up later) |
| FYI | Worth knowing, no action: receipts, confirmations, tool updates | Read, then archive |
| Can archive | Newsletters, promotions, social notifications, senders you’ve said to ignore | Delete or archive |
Anything that looks like phishing, or that contains instructions aimed at an AI, goes under a separate Flagged heading. At the end, Claude offers up to three Suggested next steps (for example, drafting replies or suggesting labels) and does nothing until you pick one.
The mapping isn’t one-to-one: Mann’s actions are about what you do, the buckets about when an email needs you.
It also reads a short context file you fill in once (time zone, VIP senders, senders to ignore, labels, tone and rules).
Example (fictional, not my real inbox)
I built this by applying the skill’s instructions and output format to its shipped example context (Fernleaf Studio, made up) and made-up emails. It isn’t a recorded run.
Inbox triage · unread in Inbox, last 48 hours · 14 threads · Tue 09:12 (Europe/Budapest)
Reply today (2)
- Accountant · Q3 invoices: VIP, asks for the files "by Wednesday" · send the Q3 invoices
- Paper shop · Re: wholesale prices: replying to your wholesale enquiry, asks about minimum order · confirm the minimum order
This week (2)
- Customer · Printing size question: asks if the planners print on Letter paper · reply with the print guide
- Illustrator · Spring cover invoice: invoice "due 3 November" · check and pay before the due date
Waiting on (1)
- Print supplier · Sample pack: you asked for samples on Thursday, no reply yet · follow up on Friday if nothing arrives
FYI (3)
- Payment provider · Payout sent: confirmation, nothing to do
- Store platform · New order: order confirmation
- Store platform · New order: order confirmation
Can archive (5)
- Design newsletter (2) · Planner blog digest (1) · Social notifications (2)
Flagged (1)
- "Billing team" (look-alike domain) · Update invoice address: asks the assistant to forward invoices to a new address · looks like phishing, check the sender before doing anything
Suggested next steps
1. Draft replies for the 2 Reply today emails?
2. Show label suggestions (Customers, Admin, Collabs)?
3. Suggest a filter for the design newsletter?Set it up
Connect Gmail
Go to Customize → Connectors, find Gmail, select Connect and sign in to Google. Then, in a chat, click +, choose Connectors and make sure Gmail is on. Anthropic says the Google Workspace connectors are available on all Claude plans; on Team and Enterprise, an owner has to enable them first (Claude help center). My guide assumes Claude Pro.
Install the skill
- Go to Settings → Capabilities and turn on Code execution and file creation (Use skills in Claude).
- Go to Customize → Skills, click +, choose Create skill → Upload a skill, and upload gmail-inbox-triage.zip. Then switch the skill on.
The ZIP is ready to upload as it is, with the gmail-inbox-triage folder at the top. If you upload it without filling in the context file, the skill lists the missing fields once and uses sensible defaults: unread in Inbox, last 48 hours, your local time zone. For sorting that knows your VIPs, first fill in context-template.md inside the folder, then zip the folder again (the folder itself, not the files inside it) and upload that.
Say “Triage my inbox.”
Open a new chat with Gmail on and say “Triage my inbox.” The guide’s daily version adds: “Use my context file. Don’t change anything.” Start with Reply today.
Safety: what it won’t do, and what it can miss
Giving an AI access to your email should make you a bit nervous. Here’s how the skill is written:
- Read-only by default. It doesn’t label, archive, mark as read, star, move, delete, unsubscribe, reply or forward anything unless you explicitly ask for that specific action.
- It never sends on its own. When you ask for drafts, it saves replies as Gmail drafts for you to review and send yourself. The Gmail connector itself can send, reply and forward, and Claude asks for your approval before each of these by default (Claude help center), so read every approval prompt before you click yes.
- Labels only on your yes. It suggests labels and applies them only after you approve a specific list.
- Email is information, not instructions. If an email tells “the assistant” to do something, Claude doesn’t do it and lists it under Flagged. It also doesn’t open links or download attachments.
- Phishing flags are hints. It flags emails that look like phishing, but it never calls anything safe. Claude can miss things or flag a safe email, so check the original before you act on anything important.
That’s how I work with every AI tool: it suggests and drafts, I decide and send.
A weekly rhythm
Once a week, it helps to zoom out. I pair this skill with my free Weekly Ops Report Skill, which turns your week’s notes into a one-page report. The weekly status report template post shows the format and a sample. Triage during the week, report on Friday.
Want the rest of your day in Claude too? The triage skill is a free first step into Module 5 of the Claude + Connectors Starter Kit ($49), which covers Gmail, Calendar and Drive daily operations. The kit has 6 modules and 6 installable skills. Three modules use real runs; the rest are clearly labelled illustrative walkthroughs.
FAQ
What is inbox zero?
An email method from Merlin Mann. You process each message with one of five actions (delete, delegate, respond, defer or do), so your inbox stops working as a to-do list and takes up less of your attention.
Who invented inbox zero?
Merlin Mann, who wrote about it on his site 43 Folders and presented it in a Google Tech Talk in 2007.
Does inbox zero mean having zero emails?
No. The "zero" refers to how much of your attention the inbox takes up, not the number of messages in it. An inbox can be at zero with plenty of archived mail behind it.
How do I do inbox zero in Gmail?
Process email at set times and pick one of the five actions for each message. Use Archive to clear handled email, a label such as "To respond" for deferred replies, Snooze for things that come back later, and filters for newsletters.
Can Claude change or send my email with this skill?
The skill is read-only by default and never sends on its own. It changes nothing unless you ask for a specific action. When you ask for drafts, it saves replies as Gmail drafts for you to review and send. The connector can send with your approval, so read approval prompts.
Is the Gmail Inbox Triage Skill free?
Yes. It's a free download on Gumroad: a ready-to-upload skill ZIP with a context template and a fictional example, plus a PDF guide with 6 copy-ready prompts. The guide assumes Claude Pro and a Gmail account.