Capture everything: the one-inbox rule

If a thought can land anywhere, it lands in your head, so give every loop exactly one home

You are at the Capture step of the Empty-Head Loop, the first and most load-bearing move. GTD with AI agents only works if capture is frictionless and total, because the moment a thought has nowhere fast to go, it goes back into your head and the tax restarts. The rule is simple and absolute: one inbox, every loop, zero thinking at the point of capture.

This chapter installs that inbox and the habit that feeds it. By the close you will have a single live capture point you can dump into in under five seconds from any device, and the discipline to actually use it.

What "one inbox" means and why one is the whole point

Capture is the act of getting a thought out of your head and into trusted storage the instant it appears, before you decide anything about it. The discipline that makes it work is that there is exactly one inbox. Not one for tasks, another for ideas, a notebook on the desk and a notes app on the phone. Scattered capture is the same as no capture, because a brain will not trust five places, so it keeps a backup copy of everything, which is your head.

One inbox means one trusted destination for every kind of loop: a task, an idea, a follow-up, a thing to buy, a someday-maybe. They all land in the same place, raw and unsorted, because sorting is a later step. The job at capture is volume and speed, never organisation.

The exact steps to build your capture inbox

1. Pick one capture tool and commit. Todoist is built for exactly this: a global quick-add, natural-language parsing, and the same inbox on desktop, phone and web. Pick it, or your equivalent, and resolve that nothing competes with it.
2. Set the inbox as the default destination. Every new item lands in the Inbox project by default, with no project, label or date required. Friction at capture is the enemy, so demand nothing of yourself but the words.
3. Wire the three capture paths. Keyboard: a global shortcut that opens quick-add from anywhere on your computer. Mobile: a home-screen widget or share-sheet action so a thought goes in while you are walking. Voice: a phone shortcut so you can speak a loop into the inbox hands-free.
4. Test the five-second rule. From a cold screen, time yourself getting one thought into the inbox. If it takes longer than five seconds, the path is too slow and your brain will route around it back to memory. Tune until every path clears five seconds.
5. Empty your head into it once. Run the full brain-dump from the last chapter straight into this inbox. It will be messy and long, and that is correct. Processing comes later.

Todoist as the capture inbox: a worked example

Consider a solo brand and web designer, the kind of one-person firm juggling six client projects and a personal life. The challenge was a classic leak: ideas and client requests arrived by email, Slack, phone and shower, and landed in four different places or none, so roughly two or three commitments a month slipped through and turned into apologetic recovery emails.

The approach was to make Todoist the single inbox and kill every other capture surface. The designer set the global quick-add shortcut on the laptop, added the Todoist widget to the phone home screen, and built a voice shortcut for capture while away from the desk. Every loop, from any channel, now went to one place in seconds.

The measurable result over the first month: dropped commitments fell from an average of three a month to zero, and the designer reported the inbox catching roughly fifteen to twenty items a day that would previously have lived in their head. The capture habit alone, before any clever processing, removed the dropped-ball anxiety.

INTERVIEW EWOUD: What is your own capture path when a thought hits away from the desk, and what was the last tool you abandoned because it added friction to capturing a loop?

Pitfalls at the capture stage

Capturing into more than one place. The instant you have a second inbox, your brain stops trusting the first one. Consolidate ruthlessly to one.

Organising at capture time. Adding a project, a label and a due date to every item makes capture slow, so you stop capturing. Dump raw, sort later.

Leaving items as vague nouns. "Website" tells future-you nothing. Capture the loop as a short phrase you will understand later, even if you refine it during processing.

Skipping the voice and mobile paths. Most loops appear away from the keyboard, so a desktop-only inbox misses the majority of your thinking.

With one trusted inbox catching every loop, your head is finally allowed to empty. But a full inbox is not a calm system yet, it is a pile. Next you run that pile to zero and turn each item into a decision, with a triage agent doing the sorting.