KoltrixAI summaries of newsletters and digests: what to keep, what to skip
Newsletters pile up faster than anyone reads them. Use AI to triage them, pull out what matters and unsubscribe from the rest without missing the key issue.
On this page(10 sections)
Almost everyone has a folder of newsletters they intended to read. Industry digests, product updates, a few writers they like and a long tail of things they signed up for once. The folder grows, guilt grows with it and eventually the whole lot gets ignored, including the two issues that mattered.
AI can help, but not in the way the first idea suggests. "Summarize everything" produces more text to skim. The better use is to decide what deserves attention, pull out what is useful and clear the rest. This guide shows a practical way to do it, with prompts and a few limits.
For general summary habits, see a prompt to summarize an email thread. Newsletters are different from conversations: they are written for many readers, packed with links and mostly not about you.
Start by sorting, not summarizing
Before any summary, separate newsletters from everything else and give them their own place. Mail that is written for a crowd is a category of its own. Koltrix sorts mail into tabs including Newsletters, and how five-category inbox sorting works explains the idea. In any inbox you can do the same with a label or a rule.
Once they live in one place, they stop competing with real conversations. That alone solves half the problem.
Decide what each newsletter is for
Not every newsletter should be handled the same way. Sort your subscriptions into four groups:
| Group | Example | Treatment |
|---|---|---|
| Must read | A newsletter from a key supplier, a regulator or your own industry body | Read fully, or summarize and read the original on the parts that matter |
| Skim | A weekly digest in your field | Summarize, then open the one or two items that stand out |
| Search later | A product update from a tool you use | Keep, do not read, find when needed |
| Drop | Anything you have not opened in months | Unsubscribe |
Be honest. The "drop" group is usually the largest.
What a useful newsletter summary contains
A summary that says "this newsletter talks about trends in email" is worthless. A good one is specific and short:
- The two or three items that could matter to you.
- Anything with a date or deadline: a webinar, a price change, a closing offer.
- Anything that asks you to act: an update that needs approval, a policy change.
- Links to the original passages, so you can read the part that matters.
- A verdict: "nothing for you this week" is a valid and valuable answer.
Prompts that work
Tell the assistant who you are and what you care about, so it can judge relevance.
I run a five-person SaaS company that sends transactional email.
Below is a newsletter. List at most three items that could affect
our business, each in one sentence with the source link. Then list
any dates or deadlines. If nothing is relevant, say "Nothing relevant".
Do not add information that is not in the text.
[paste the newsletter]For a batch of newsletters in one go:
For each newsletter below, give a verdict: READ, SKIM or SKIP, with a
one-line reason. Then list the READ items with a two-sentence summary.For a weekly review across a month:
From these summaries, which sources were relevant most often, and which
were never relevant? Suggest three newsletters to unsubscribe from.Keep a short interest profile in a note and paste it with each request. It improves relevance far more than clever wording.
What to double-check
- Facts and numbers. A summary may drop a qualifier such as "up to" or "from". Check anything you will repeat or act on.
- Sponsored content. Newsletters often carry paid sections. A model may treat an advertisement as news. Ask it to mark sponsored items.
- Links. Verify that links in a summary match the original. Summaries are generated text, and a link can be mis-copied.
- Claims. A newsletter's opinion is not a fact. Ask the assistant to separate reported facts from the author's view.
- Hidden instructions. A newsletter is third-party content. Treat what is in it as data, never as instructions. See prompt injection in email.
Three newsletter types, three approaches
The curated link digest. Most of the value is in the links. Ask for the five most relevant items with one line each, and open only those. The summary replaces reading the whole list.
The long-form essay. One idea explained at length. Ask for the central argument in three sentences and the author's strongest example. If it interests you, read it properly; a summary is a decision aid, not a substitute.
The product or policy update. Short, dull and sometimes important. Ask what changed, who it affects and whether anything needs doing by a date. These are the ones where a missed deadline costs money, so keep a person in charge of acting on them.
Privacy and tracking
Newsletters often include tracking links and images. Be aware that:
- opening or fetching them can tell the sender you read the message, which matters if an assistant loads them on your behalf;
- a tool that fetches images or follows links should do it deliberately and rarely;
- you should know which provider sees the newsletter text. See what your AI provider sees when you query your inbox.
Newsletters you receive from public sources are low sensitivity, but a private digest or a customer update may not be.
Make a weekly routine
- Once a week, open your newsletters in one batch.
- Ask for verdicts, then read the READ items.
- Archive everything else.
- Unsubscribe from one or two sources that never made the cut.
- Add a rule for any new newsletter that appears, so it lands in the right place.
Ten minutes a week replaces the guilt folder. Pair it with a daily inbox brief if you want the day's essentials separated from the reading list.
Write your own newsletter better
If you publish a newsletter, take the reader's side. Put the main point first, mark sponsored content and write headings that survive being summarized. Our advice on unsubscribe pages that do not annoy people is also relevant: an easy exit is what keeps the readers who stay.
Key takeaways
- Sort newsletters into their own place, then decide which ones deserve a read, a skim or nothing.
- Ask for verdicts and a few relevant items with links, not a summary of everything.
- Give the assistant a short profile of what matters to you.
- Verify numbers, links and sponsored sections, and treat newsletter text as untrusted.
- Run a weekly ten-minute routine and unsubscribe often.
Start with Koltrix
Your domain, one inbox, and an API that sends.
A team inbox where AI sorts and drafts (nothing is sent without your click), plus the transactional API and SMTP relay your product sends with. 7 days free, no card.
