Capture Everything: An ADHD Inbox System for Notes, Ideas and Tasks

The idea arrived in the shower. It was a good one. By the time you were dressed it had been replaced by a half-memory of a bill you were supposed to pay and a song lyric. Later, in a meeting, someone mentioned a book you wanted to read. You wrote it on your hand. The hand got washed.

An ADHD note capture system exists for exactly this problem. It is not a second brain in the grand sense, and it is not a tagging hobby. It is one place where every thought, task and scrap of information lands, and one short daily habit that moves things out of that place to where they belong.

The reason it matters is working memory. Holding a thought while you find somewhere to put it is the part that fails. Our answer on what executive dysfunction is explains why, and the post on ADHD and working memory goes deeper. This post is about the plumbing.

One inbox, not seven

Most people with ADHD do capture things. The trouble is where. A thought goes into a text message to yourself, a sticky note, the back of an envelope, a screenshot, three different notes apps and an email draft. Seven inboxes means seven places to forget to check, and the capture was wasted.

The rule is one inbox. Every capture tool you use must feed the same place, and that place must be one you will look at tomorrow. The specific place matters less than the rule. Reasonable choices:

• The default notes app on your phone, with one note titled Inbox at the top.
• A dedicated inbox list in whichever task app you already use.
• A single paper notebook that lives in your bag or on the kitchen counter, with the inbox page bookmarked.
• Your email inbox itself, if you are someone who already checks it compulsively. Send yourself a message and it lands with everything else.

Pick one. Then make the other six harder to use: move the spare notes apps to the last page of your phone, throw out the sticky notes, and stop texting yourself. The goal is that when a thought appears, there is no decision about where it goes.

Capture tools: voice memo, widget, pocket notebook

A capture tool has one job: get the thought out of your head faster than it can evaporate. Three tools cover almost every situation, and all of them should feed the one inbox.

1. Voice memo. Hands busy, walking, driving, lying in bed. Say it to the phone assistant and have it saved as a note or a task. Most phones will transcribe it. If the transcription is rough, that is fine; you only need enough to remember what you meant.
2. A one-tap widget. Put a new-note or new-task button on the lock screen or home screen. Two taps from pocket to saved. If your inbox needs more than that, change the inbox.
3. A pocket notebook. A small notebook and a pen that never leave your bag. Paper wins in meetings, classrooms, and anywhere a phone looks rude. Every page of it is inbox. Once a day, the pages get copied into the main inbox or crossed out.

Two extras worth setting up once: an email-to-inbox address, if your notes or task app offers one, and the phone's share sheet pointed at your inbox so that screenshots, links and photos of forms land there too.

The daily empty: sort into calendar, task or reference

Capturing is the easy half. The habit that makes the system work is emptying the inbox once a day. Not organising it, not reviewing it, not making it pretty. Emptying it. Each item gets one of three destinations and then leaves the inbox.

• Calendar. It happens at a time or on a date. Dentist on the 14th, call the landlord before Friday, registration opens Monday. Into the calendar, with a reminder, then delete from the inbox.
• Task. It needs doing but not at a fixed time. Into the task list, with a rough due date if there is one. If it takes under two minutes, do it now and skip the list entirely.
• Reference. It is information, not action. A book title, a recipe, a wifi password, an idea for a project you may or may not start. Into a reference note, which is covered next.

Anything that fits none of the three is either trash or a someday idea. Trash gets deleted without ceremony. Someday ideas go to one note called Someday and are not looked at again until the weekly review.

Attach the daily empty to something you already do. Many people with ADHD do it with the first coffee, on the bus, or as the last thing before closing the laptop. It takes three to five minutes on a normal day. The whole system fails if this step is skipped for a week, so make it small enough that you can do it on a bad day too.

Keeping reference notes findable without a tagging hobby

This is where capture systems usually die. Someone discovers tags, nested folders, backlinks and colour codes, spends a happy weekend building a cathedral, and never opens it again. For an ADHD brain, the maintenance cost of an elaborate system is the problem, not the solution.

Reference notes need to be findable, not filed. Search does the finding. Your job is to make the search work, and that needs only three habits.

1. Give each reference note a title that contains the words you would type to find it. Not Ideas, but Kitchen reno ideas 2026. Not Important, but Car insurance policy number and renewal date.
2. Keep a very small number of big notes rather than many small ones. One note called Recipes to try. One called Gift ideas. One called Books and shows. Add to the top of each; never bother sorting.
3. Keep a single Reference folder, or none. If your app forces folders, use one. Searching a single folder of 60 well-titled notes takes seconds. Searching a tree of 40 folders takes a therapist.

If you prefer paper, the index approach from bullet journaling does the same job: number the pages and keep a one-page index at the front.

What to do when the inbox hits 200 items

It will happen. A rough month, an exam period, a new baby, and the daily empty stops for three weeks. You open the inbox, see 200 items and close it again. Here is the rescue procedure. It takes about 25 minutes and you do not need to be in a good mood.

1. Declare inbox bankruptcy on anything older than 30 days. Scroll to the bottom. Select everything from more than a month ago and move it into one note titled Old inbox and the date. Do not read it. If something in there mattered, it has already come back to you another way.
2. Sort the remainder by scanning for dates first. Anything with a date or a deadline goes straight to the calendar. This usually clears a third of the pile and removes the items that could actually hurt you.
3. Pull out the under-two-minute items and do them in a batch. Set a 10-minute timer. Reply to the text, pay the small bill, book the appointment.
4. Everything left is task or reference. Move it in bulk, without deciding priority. Priority is a problem for tomorrow's today view.
5. Restart the daily empty tomorrow at a smaller size: two minutes, and only today's captures.

One last note on tools. The best ADHD note capture system is almost always the one built from apps already on your phone. A notes app, a calendar and a reminders list cover all three destinations. Adding a fourth app to hold the other three is how you end up with seven inboxes again.