A second life for thoughts worth keeping.
Afterthought gathers the highlights and notes from your Kindle library and brings older ones back as a short, email newsletter.
Afterthought gathers the highlights from a Kindle library and brings older ones back as a short, thoughtfully set newsletter.
A highlight, returned
No. 1
In every work of genius we recognize our own rejected thoughts; they come back to us with a certain alienated majesty.
Essays: First Series
Ralph Waldo Emerson · Self-Reliance
Note in the margin
Rereading old highlights feels exactly like this.
How it works
Highlighted once. Returned later.
There is no Amazon account to link and no password to hand over. The reading stays where it is; only the highlights travel.
Highlight
Read as usual on a Kindle and mark the passages that resonate. Notes written along the way come with them.
Collect
A small Chrome extension opens the Kindle notebook at Amazon in your own browser, with the sign-in already there, and sends Afterthought only the highlights and notes. It syncs on request, and once a day while Chrome is open.
Rediscover
Afterthought chooses highlights old enough to have slipped from memory, prefers different books and never repeats one. They arrive as a short email, on a day and at an hour of your choosing.
Some thoughts deserve another encounter.
A passage can stay with us long after the book has been closed. Sometimes a familiar thought takes on a different meaning with time. Sometimes it simply returns at the right moment.
The newsletter
A short letter of older passages.
Each issue is set with care: the passage itself, the book and its author, and any note written at the time. Nothing else competes for attention.
- A handful of passages
- Five per issue unless changed — anything from one to ten.
- Older highlights first
- Only passages past a minimum age, thirty days to begin with.
- Never a repeat
- Once a highlight has been sent, it stays out of future issues.
- Easy to pause
- Every issue links to its settings and to unsubscribe.
From Afterthought
Afterthought No. 1 — Five thoughts you once highlighted
Questions
Plainly answered.
How do the highlights get in?
Amazon offers no public way to connect Kindle highlights, so there is no “Connect Amazon” button. Instead, the Afterthought extension for Chrome opens the Kindle notebook page — the one at read.amazon.com that already lists every highlight — and reads it in the browser, at a calm pace. It sends the highlights and notes to the Afterthought account, adds only what is new, and repeats this once a day while Chrome is open (this can be switched off).
Does Afterthought ever see the Amazon password?
No. The extension uses the Amazon session that is already in the browser. It never reads, stores or sends the password or cookies. If Amazon asks for a fresh sign-in, the extension stops and shows a hint on its icon; signing in is always done by hand.
What is stored, and where?
The email address, the synced highlights and notes with their book titles and locations, the newsletter settings, and which highlights went into which issue. Everything is stored in the EU. Deleting the account removes all of it, and everything can be downloaded as a file first.
Who else reads the highlights?
Nobody. Each issue passes through the email provider that delivers it. No ads, no analytics, no AI services, no selling of data.
What are the limits?
The extension runs in Chrome and Chromium browsers such as Edge, Brave and Arc. Kindle does not share when a highlight was made, so Afterthought counts from the day it first saw it. Some publishers cap how much text the notebook shows, and notes without a highlight are skipped.
What does it cost?
Nothing during the beta.