What to Post on Substack Notes: Ideas That Actually Work

You open the Notes composer, cursor blinking, and nothing comes. This happens to almost every Substack writer at some point, usually not because they lack opinions but because "post a Note" feels like an assignment with no brief. The fix isn't a content calendar or a rigid posting formula. It's a small set of categories that reliably give you something to say, rotated so the feed doesn't feel like the same post rewritten five times a week.

Here's what actually works on Substack Notes: behind-the-scenes glimpses, opinions and hot takes, quotes pulled from your own writing, direct questions to your audience, and curation of other writers' work. None of these require a fixed formula. What matters is mixing them.

Where these categories come from: not a brainstorm. WriteStack sits on a dataset of millions of real Substack Notes, and these six are the categories that hold up when you look at what actually gets restacked rather than what sounds good in a listicle. In a sample of 20,000 recent Notes, multi-line Notes averaged about 11% more reactions and 28% more restacks than single-line ones, and Notes in the 150-300 character range beat Notes under 50 characters by roughly a third on reactions.

One number worth having before you start: WriteStack has close to 100 verified reviews from Substack writers across multiple platforms. No other tool in this category has any that we could find anywhere.

Table of Contents

• Behind-the-Scenes Notes
• Opinions and Hot Takes
  • How Far Is Too Far
• Quotes From Your Own Posts
• Questions to Your Audience
• Curating Other Writers' Work
• Personal Updates
• Why Mixing Formats Beats a Fixed Formula
• A Simple Weekly Mix to Start From

Behind-the-Scenes Notes

The easiest category to run out of ideas for is also the one sitting right in front of you: what you're actually doing right now. A screenshot of a messy first draft. A line about how long a piece took to research. A photo of your workspace on a day nothing's going right. Readers subscribe to a person as much as a topic, and behind-the-scenes Notes are what make the person visible between posts.

This category works because it requires zero extra thinking. You don't have to invent an opinion or research a fact. You just describe what's already true about your process at this exact moment. "Rewrote this intro four times and I'm still not happy with it" is a complete, postable Note.

Behind-the-scenes content works especially well for writers early in their publication's life, before there's a backlog of past posts to quote or a large enough audience for questions to reliably get answers. A brand-new writer with three subscribers can still post a behind-the-scenes Note today, and it costs nothing to try. It also tends to age well: a year into a publication, readers often say the process Notes are what made them feel like they knew the writer before they'd read a single full post.

A few reliable sources for this category: the moment you get a rejection or a piece of harsh feedback, the moment an idea you were excited about falls apart, the small decision behind a piece of writing (why you cut a paragraph, why you chose one title over another), or simply what your desk or notebook looks like on a normal Tuesday. None of these require a polished photo or a clever caption. The plainness is the point.

Practical rule: keep a running note on your phone of small process moments as they happen (a rewrite, a rejection, an unexpected reaction to a draft). Pulling from that list when you sit down to write Notes beats trying to remember anything after the fact.

The problem with that list is that it fills up at the wrong times. Process moments happen at 11pm, mid-draft, or in the twenty minutes before a meeting, and none of those are moments you want to open Substack and publish. WriteStack takes the whole list at once: you write the six things that happened this week in one sitting, assign each a time, and they go out while you are doing something else. Start a free 7-day trial and empty that phone note into a week of scheduled Notes.

Opinions and Hot Takes

A flat, safe statement rarely gets restacked. A real opinion, stated plainly, does. This doesn't mean manufacturing controversy for its own sake. It means saying the thing you actually think about your topic instead of the hedged, everyone-agrees version of it.

The opinion doesn't need to be extreme to work. "Most writing advice about hooks is backwards" is a stronger Note than "Hooks matter, here are some tips," even though the second one is more conventionally useful. The first one has a position a reader can agree or disagree with, which is what drives a reaction or a reply. The second one is information, and information alone rarely moves someone to engage.

Opinions also tend to work best when they're about something the writer has direct experience with, rather than a general take on a topic they've only read about secondhand. A fiction writer's opinion on outlining versus discovery writing carries weight because they've actually done both. The same writer's opinion on, say, macroeconomic policy carries a lot less, even if it's well-reasoned, simply because readers came to that publication for one kind of expertise, not the other. Staying inside your actual domain of experience is what keeps an opinion Note from reading as generic hot-take content.

How Far Is Too Far

There's a real line between a strong opinion and something that reads as bait for outrage rather than a genuine view. The test that tends to hold up: would you say this in a room of your actual readers, not anonymously to a crowd of strangers. If the honest answer is no, the Note is probably reaching for engagement rather than saying something you believe, and readers tend to sense the difference even if they can't always name it.

Practical rule: write the opinion, then check if you'd still stand behind it a week from now. If not, it's probably manufactured rather than genuine, and manufactured takes tend to age badly in a public feed that doesn't delete anything.

Quotes From Your Own Posts

If you've published even one post, you already have Notes sitting inside it. Pull a single sharp sentence out of a past post, add a line of fresh context above it, and it becomes a new Note that also quietly points interested readers back to the full piece.

This category solves two problems at once. It gives you something to post without writing anything new, and it extends the life of a post well past its publish date. A post that went out three months ago can still bring in new readers today if a line from it resurfaces as a Note that catches someone's attention in the feed. Substack's own launch announcement for Notes describes the feature as a way for writers to "recommend almost anything," including posts, quotes, comments, images, and links, which is exactly what a quote-plus-context Note is doing: pulling a piece of your own writing back into circulation.

This is also the category where a tool earns its keep fastest. WriteStack's Notes generator reads what you have already published and drafts from it, so the pulled quote arrives already framed in your voice rather than in generic AI phrasing you then have to rewrite. Drop in a post URL, get a Note that sounds like you wrote it, queue it. Start a free trial and turn your last three posts into a week of Notes in about ten minutes.

Practical rule: when you finish writing a post, before you publish it, highlight three lines that could stand alone as Notes. Schedule them to go out over the following two weeks instead of letting the post's best lines disappear into the archive.

Questions to Your Audience

A specific, easy-to-answer question consistently produces more replies than almost any other Note format, and replies are the deepest engagement signal Substack tracks. The key word is specific. "What do you all think?" is too broad to answer easily. "What's one newsletter you've never unsubscribed from, and why?" gives someone an actual on-ramp to respond in ten seconds.

Questions also do something behind-the-scenes Notes and opinions don't: they hand the floor to your readers instead of centering you. That's valuable on its own for relationship-building, and it often surfaces material (a phrase, a story, a recurring complaint) worth turning into your next post.

There's a second, less obvious benefit. Replies to a question Note are a direct line into how your specific readers talk and what they care about, which is far more useful than guessing. A writer who asks "what's the last thing you read that changed how you think about money" and gets forty replies has forty small, real data points about their audience that no analytics dashboard would surface. Some writers keep a running document of the best reader replies to pull from later, both for future post ideas and for genuine quotes (with permission) to feature in a Note of their own.

The cost of this category is the follow-up. A question Note that works produces replies, and replies only pay off if you answer them, which means tracking four or five live threads across the composer, the notifications tab, and whatever you left open yesterday. Most writers lose two or three of those threads by the next morning. WriteStack's Activity Center puts replies, mentions, and restacks on one screen instead of five browser tabs, so working through forty responses is one sitting rather than an evening of hunting for where the conversation went.

Practical rule: ask a question specific enough that you could imagine three different one-line answers to it before you post it. If you can't picture a quick answer, the question is too broad and will mostly get silence.

Curating Other Writers' Work

Not every Note needs to originate with you. Sharing a piece from another writer, with your own take on why it's worth reading attached, is a legitimate and underused category. It signals what you value to your own readers, it's a low-effort way to stay visible on days you have nothing original to say, and it often earns goodwill (and a restack back) from the writer you featured.

The mistake to avoid is curating without adding anything. A bare link with no comment reads as low-effort and rarely performs. A line about why the piece mattered to you, or what it made you think about, is what turns a repost into something worth restacking further.

Curation also works as a relationship tool over time. Writers who consistently and thoughtfully feature others in their niche tend to get featured back, and that reciprocity compounds into real cross-audience exposure over months. This is closer to how blogging communities built links to each other in the early web than to how social media algorithms work today, and it's one of the few growth tactics on Substack that costs nothing but attention and a few honest sentences.

The bottleneck here is supply, not writing. You have to find the piece before you can say anything about it, and scrolling the feed for twenty minutes hoping something good floats past is not a plan. WriteStack's inspiration feed updates continuously from live Notes data, so what surfaces is what is actually moving in your niche this week rather than what was moving whenever the list was assembled. Narrareach's equivalent is a static list, verified on their live page as of July 2026, which means it shows the same suggestions in month six that it showed on day one.

Practical rule: never share a piece you haven't actually read in full. It's easy to spot a Note about an article the writer only skimmed, and it undercuts the trust curation is supposed to build.

Personal Updates

Milestones, small wins, honest setbacks. Hit a subscriber number. Missed a deadline. Changed your mind about something you'd been saying for months. These Notes work because they're the closest thing to a real update between two people, and readers who've been following a writer for a while are often more invested in this kind of Note than in another piece of advice.

This category needs the lightest touch of any on this list. A personal update that reads like a humblebrag or a manufactured vulnerability moment tends to land worse than one that's simply stated plainly, without dressing it up.

Personal updates also work well tied to concrete numbers rather than vague feelings. "Crossed 500 subscribers today, took eleven months" gives readers something specific to react to and is easy to celebrate honestly. "Feeling really grateful for this community today" is harder for a reader to respond to because there's no specific thing being marked. The more concrete the update, the easier it is for someone to reply to it with something other than a generic reaction.

Practical rule: if a personal update feels uncomfortable to post because it's too honest, that discomfort is usually a sign it will land well, not a sign to soften it. If it feels uncomfortable because it's oversharing, that's a different signal, and worth listening to as well.

Why Mixing Formats Beats a Fixed Formula

Some writers try to solve the "what do I post" problem by building a rigid formula: Monday is a question, Wednesday is an opinion, Friday is a quote. That structure can help in the first couple of weeks by removing the blank-page problem entirely. Over time it tends to produce Notes that feel scheduled rather than written, because the format is chosen before the thought is, not the other way around.

A better approach is to keep the five categories above as a menu, not a calendar. On a day when you have a strong opinion, post the opinion. On a day when nothing original comes to mind, pull a quote from an old post or share something you read that morning with a line about why it stuck. The mix ends up looking varied naturally, without a spreadsheet enforcing it.

There's also a reader-side reason to mix formats: different readers respond to different kinds of Notes. Some readers reliably reply to questions and never react to opinions. Others restack a strong opinion but never leave a comment anywhere. A feed built entirely from one category is optimizing for only one of those reader types and quietly missing the rest. Rotating through categories over a couple of weeks reaches more of your actual audience than perfecting one format and repeating it.

Category	Best used when	Typical strength
Behind-the-scenes	You have nothing "finished" to share	Low effort, builds familiarity
Opinion/hot take	You have a real, specific view	Highest reaction and restack potential
Quote from your own post	You just published or have an older post worth reviving	Drives traffic back to full posts
Question	You want replies and reader input	Highest reply rate
Curation	You read something worth sharing	Builds relationships with other writers
Personal update	Something genuinely happened worth naming	Deepens existing reader relationships

The table above is the general case. The question you actually need answered is narrower: which of these categories works for your publication, at your size, with the readers you already have. A dashboard that only ever sees your own account cannot answer that, because it has nothing to compare you to except a version of you from last month. WriteStack's cross-publication benchmarks put your question Notes next to question Notes from publications in your range, so a 3% reply rate reads as strong or weak instead of just reading as 3%. That is the difference between knowing a category performed and knowing it performed well.

The part people don't expect

Knowing the categories is the easy half. The hard half is knowing which ones are working for you, and that is where every other Substack tool stops. Most of them tell you a Note got 40 likes. WriteStack tells you which of your six categories drove actual subscribers, which link inside a Note got clicked, and whether your restack rate is climbing or sliding month over month, benchmarked against publications your size rather than against your own last week. It also schedules Substack chat posts, which no other tool does at all, and its inspiration feed updates continuously from live Notes data instead of sitting as a fixed list someone wrote once.

Practical rule: if you notice you've posted the same category three times in a row, deliberately reach for a different one next, even if the familiar category feels easier that day.

A Simple Weekly Mix to Start From

If the menu above still feels like too many options, here's a starting mix that covers all five categories without a rigid daily assignment attached to it: two opinions, two quotes from your own posts, one question to your audience, one piece from another writer worth passing on, and one personal update or behind-the-scenes moment, spread across a week. That's seven Notes, roughly one a day, and it naturally avoids the flat, repetitive feed that comes from leaning on just one category.

Adjust the ratio once you've tracked a month of performance and know which categories your specific audience responds to. A writer in a niche with a very engaged comment culture might lean harder into questions. A writer whose readers mostly lurk might get more from opinions and shared reads, since those don't require a reply to register as a read.

It's worth resisting the urge to plan a full month of Notes in one sitting, even once a working mix is found. Notes are cheap to write precisely because they respond to what's happening right now, a piece of feedback, a thought mid-draft, something another writer just posted. A month of pre-planned Notes tends to feel stale by week three because it was written disconnected from whatever is actually going on. A week at a time keeps the content close enough to real to still sound like a person, not a content calendar running on autopilot.

For how often to post beyond this weekly mix, and what happens at higher volumes, see How Many Substack Notes Per Day. We break down the formatting mechanics behind the numbers at the top of this piece in Substack Notes Formats That Work, and if you want the full picture of Notes as a growth channel, start with The Complete Guide to Substack Notes.

Write the seven in one sitting. Queue them. Then spend the week writing your actual posts instead of remembering to hit publish every morning. WriteStack drafts across all six categories in your own voice, queues the week, and then tells you which categories actually brought in subscribers, which is the part that turns a mix into a strategy. Close to 100 verified reviews from Substack writers, and no other tool in this category has any we could find.

Start a free 7-day trial and build your first week's mix in about twenty minutes.