Sam's email is three lines long, needs three lines back, and has been open since Tuesday.
You have read it four times. Each time you opened it, wrote the first word in your head, and closed it. Now it is Monday. Sam has not chased you, which is worse, because the reply now needs a first line about the delay. If you have ADHD there is one of these in every inbox you own, and you cannot explain it to anyone, including yourself.
A three-line reply is not a small task. It is an old one.
The size of the reply was never the point.
An ADHD brain starts on interest, novelty, challenge or urgency. That is William Dodson's clinical model, built from decades of adults with ADHD and not from a trial, so we say it plainly and no bigger. On Tuesday the email had one of the four. It was new, so you opened it, and opening it spent the new. Now run the list again. An email from last Tuesday is not new. Sam wrote "no rush", so there is no deadline. Three lines is no challenge. Nobody is in the room while you type.
An ADHD brain does not start on importance, and importance is all Sam's email has left.
Every day it waits it gets heavier, and no newer
The reply is not sitting quietly in the inbox. It is charging you rent.
In 2011 Masicampo and Baumeister ran five experiments on unfinished goals. An open goal kept pulling at attention while people did other things, and the pull stopped when they wrote a specific plan for it. Those people did not have ADHD, so we say this plainly. But the shape is familiar. Sam's reply has taken a small piece of every day since Tuesday, and each day it collects one more line of apology to write.
So the task grows while its newness shrinks. By Monday it is bigger, older and no more urgent than it was, and you have paid for it six times without touching it.
You were never lazy. You were waiting for one of four things, and Sam's email brought none of them.
Why points for replying make it worse
The obvious answer is a reward, and the reward is the wrong tool.
A badge for five replies, a gold star for a clean inbox, a treat after the email. In 1999 Deci, Koestner and Ryan reviewed 128 experiments and found expected rewards lower the motivation you already had. You had a little; you do want to answer Sam. Pay yourself for it and you turn a small want into a job, and a job is one more important thing. The reward is also old by Thursday.
What holds up is a game against yourself, with a clock and no prize. The clock is urgency you can switch on. The race is a challenge. Nothing is counted back at you.
Three ways to give the reply something to start on
Pick one lever. Not three.
A time you can see. "Reply to Sam by 3pm." A day is not a deadline; a time of day is. At 2pm the last hour arrives in daylight, and the last hour is where an ADHD brain starts.
A dare to start, not to finish. Two minutes on a clock, and the whole task is to type the first line. Not to send. Starting is the win, and once the first line exists the other two follow it out.
A dash with company. Sam's reply is one of four small things. Put all four on a ten-minute clock and clear as many as you can. The reply stops being the task and becomes a lap.
How Kaapi does it
Write "reply to Sam by 3pm" in the dump and the task wears a badge: 3h left.
Under three hours it says 1h 20m left, and it fills and darkens through the last two hours. It never turns red, because a red pile is the thing you stop opening. From 9 in the morning Timi, the pebble at the bottom right of the screen, says the deadline once: "'Reply to Sam' is due at 3:00 PM." In the last two hours, once: "'Reply to Sam' has 1h 20m left. Start now?" If 3pm passes, the task says Missed in plain ink and asks: New time, Done already, or Let it go.
Games stay off until you turn on "Make it a game". Then Timi offers at most one a day, chosen from what is on your list, with no menu to pick from. For Sam's email the offer is a dare: "Bet you can't start 'Reply to Sam' in two minutes." Type the first line and the card says: "Started. That was the hard part." When Sam's reply sits beside three other small things, the offer is a dash instead: "4 quick ones are open. Ten-minute dash?" At the end: "You cleared 3. Your best is 5." No points, no leaderboard, nothing counted back.
We chose the dare's wording on purpose. Kaapi bets against you starting, not against you finishing, because the finish was never the problem.
How to do this without Kaapi
Sam gets three lines today, and none of them is an apology.
- Put a time of day on the reply, somewhere you look. A calendar block at 2:30 called "Sam, by 3."
- Set a two-minute timer. The task is the first line. Not sending.
- Cut the apology. Sam wants the answer. "Yes, Thursday works. Bring the file. See you then." Send.
- If it will not start alone, gather three other small replies and put ten minutes on the clock for all four.
- If it has waited more than a week, get someone on a call while you write it. Ten minutes of company.
The four levers are laid out in why an ADHD brain will not start, and the rules we chose for a game with no points are in a game for one player.
Frequently asked questions
Why can't I reply to a simple email with ADHD?
Because simple is not one of the things an ADHD brain starts on. It starts on a deadline, something new, a game or someone there, and a short reply with "no rush" on it has none of the four. The email was new once, when you opened it. An email from last Tuesday is not new.
Why does an email get harder to answer the longer I wait?
Two things move in opposite directions. The newness is gone after the first read, so the reason to start shrinks. The open task keeps pulling at attention until it has a plan, as Masicampo and Baumeister found in 2011, and every day adds a line of apology. Older, heavier, and no more urgent.
Should I reward myself for clearing my inbox?
Not with points or prizes. In a 1999 meta-analysis of 128 experiments, Deci, Koestner and Ryan found expected rewards lower the motivation you already had. A clock is a different tool: it adds urgency without a prize. Two minutes to start, or ten minutes to clear four replies, and nothing counted back at you.
How do I make myself reply to an email today?
Give it one lever. Put a time of day on it, like "by 3pm", and put the time where you look. Or set two minutes and make the whole task the first line. Or gather four short replies and race a ten-minute clock. Skip the apology; write the answer; send. Starting is the win.
Sources
- Dodson, W. (updated 2025). How adults with ADHD think: Uncomfortable truths about the ADHD nervous system. ADDitude. additudemag.com/adhd-in-adults-nervous-system. A clinical model from practice, not a trial.
- Masicampo, E. J., and Baumeister, R. F. (2011). Consider it done! Plan making can eliminate the cognitive effects of unfulfilled goals. Journal of Personality and Social Psychology, 101(4), 667–683. doi.org/10.1037/a0024192. Five experiments, not ADHD samples.
- Deci, E. L., Koestner, R., and Ryan, R. M. (1999). A meta-analytic review of experiments examining the effects of extrinsic rewards on intrinsic motivation. Psychological Bulletin, 125(6), 627–668. doi.org/10.1037/0033-2909.125.6.627. A meta-analysis of 128 experiments.