Reddit self-promotion rules by subreddit: A reference database for brands

Most brand teams treat Reddit as a single channel with a single set of rules. The result is the failure mode every Reddit marketer has seen up close: a post that worked in r/SideProject gets the same brand permanently banned from r/Entrepreneur the same week. Reddit is not a channel. It is 100,000 subreddits, each operated by a different group of unpaid moderators, each enforcing a different bundle of rules through different AutoMod configurations, and each with a different appetite for brand participation. Most of those bundles are not documented in any central place.

This is a database. It catalogs the self-promotion rules for the 25 subreddits that matter most to growth-stage B2B and DTC brands in 2026, broken into five categories and five rule dimensions. It is the artifact we wish had existed the first time a client asked us "which of these subreddits will work for us?"; and the artifact we maintain internally for every campaign we plan. Soar is a community marketing agency that has run 4,200+ community campaigns across 280+ brands since 2017, and the rule mapping that follows is the version we use ourselves.

Why "Reddit's promotion rule" is the wrong mental model

The biggest single error marketing leaders make on Reddit is treating the platform like a network with one rulebook. There is a sitewide content policy, but it is intentionally short and qualitative. Reddit's official guidance is that "spammers are characterized by signs of inauthenticity" and that the spirit of the rule is to be "a redditor with a website, not a website with a reddit account." That guidance is enforced unevenly; by individual moderator teams, in YAML AutoMod configurations none of them are required to publish, against accounts whose internal Contributor Quality Score those moderators cannot see and the account holders cannot see either.

For a brand, the practical consequence is that the rules that decide whether a post survives are subreddit-level and operational, not sitewide and policy-level. A campaign plan that says "we will follow Reddit's promotion rules" is a campaign plan that is going to lose accounts in the first month. The plan that works names each subreddit, names each subreddit's enforced thresholds, and maps each one to an account, a posting cadence, and a content type that fits.

The five rule dimensions every subreddit enforces differently

Before the database itself, the framework. Every subreddit's relationship with brand content lives along five axes. The database below scores each subreddit on these five so a strategist can see at a glance which communities are worth the operational lift.

1. Who can post. Account age gate, karma gate, sometimes per-subreddit karma gate (earned inside this specific community, not globally). These are AutoMod-enforced and silent; your post simply does not appear.

2. When promotion is allowed. Some subreddits ban it outright. Some restrict it to a single weekly thread (Share Your SaaS, Promote Your Business, Marketing Monday). Some allow it in posts under specific flairs. Some allow it inside organic comment threads but never as a top-level post.

3. What counts as promotion. A subreddit can treat any link to your domain as promotion. Or it can treat a brand name mention as promotion. Or it can treat the second post in 30 days as promotion regardless of content. The definition is the rule.

4. Which links are auto-removed. Domain bans operate at the subreddit AutoMod level (your URL is blocked in that one community, appealed through modmail) and at the sitewide Reddit admin level (your URL is blocked everywhere, much harder to recover). URL shorteners are auto-removed almost everywhere.

5. How the moderators enforce. Some teams remove silently. Some message the user. Some warn first. Some ban first. Some maintain an AutoMod blacklist of product URLs from prior offenders. This is the dimension that most determines recoverability after a misstep.

When a brand says "we tried Reddit and it didn't work," the post-mortem almost always traces back to one of these five being unknown to the team running the campaign.

Each entry below uses the same compressed format: community, promotion posture, gate (account age and karma where known), the approved promo lane if one exists, and the most common reason brand posts get removed. Numbers are the version moderators have publicly cited or our team has confirmed during 2025–2026 campaign work. The absence of a karma number in a subreddit's published rules does not mean there isn't one; most subreddits use AutoMod thresholds that are deliberately not documented. "Undisclosed gate" means we have confirmed gating in the wild but the moderators have chosen not to publish the threshold.

Business and entrepreneurship subreddits

This is the most contested category on Reddit for brand teams. Five of the largest entrepreneurship communities all carry overlapping audiences, and all five have spent the last three years tightening their promotion policies in response to the wave of AI-written founder content. Most growth-stage SaaS and DTC brands will end up on at least three of these. Most will be banned from at least one within 90 days if their team posts cold.

The pattern across this cluster is consistent: the only sustainable lane for direct promotion is the designated weekly thread, the only sustainable lane for visibility outside the thread is contributing high-quality answers in comment threads where your product is genuinely relevant, and the fastest path to permanent loss of access is asking people to DM you or check your profile. For deeper operational notes on r/Entrepreneur's exact AutoMod behavior, see our r/Entrepreneur posting rules playbook, and for r/smallbusiness see r/smallbusiness self-promotion filter survival.

SaaS and developer subreddits

The SaaS cluster is where the rules have tightened most aggressively in 2026. r/SaaS, in particular, formalized a one-promotional-post-every-60-days rule in April 2026, with AutoMod treatment of product URLs from prior offenders. Developer communities tend to be the opposite: they will tolerate transparent self-promotion of genuinely interesting builds but are unforgiving about anything that reads like marketing copy.

For an inside view of how r/SaaS moderators actually enforce, see our r/SaaS rules decoded breakdown. For r/devops mod filter behavior and account karma gates, see r/devops mod filters and karma gates.

Marketing and sales subreddits

The marketing subreddits are uniquely hostile to brand accounts because the audience is itself marketers; they recognize promotional patterns faster than any other category and they downvote them faster. None of the four largest marketing-adjacent communities allow open promotion. Two have weekly threads. Two do not.

The trip wires here are very specific. The r/marketing and r/Digital_Marketing AutoMod configurations explicitly remove posts containing phrases like "DM me", "drop me a comment", and "check my profile"; patterns documented in our r/marketing and r/digital_marketing promotional phrases reference. The risk on this cluster is not getting banned for being a brand. It is getting banned for sounding like a marketing brand.

Ecommerce and DTC subreddits

The ecommerce category is more permissive than the marketing category, because the audience is generally smaller merchants asking each other for help. But it carries different risks: AmazonSeller and FulfillmentByAmazon are unusually strict about anything resembling a tool pitch, and r/Ecommerce is unusually strict about anyone trying to sell to merchants instead of helping merchants sell.

The pattern across ecommerce is that the operating accounts the moderators trust are accounts that have spent months answering merchant questions before they ever mention a tool of their own. The cluster does not reward velocity. It rewards visible operator experience.

Professional and vertical subreddits

This cluster is the long tail and the most heterogeneous. The subreddits below are not "Reddit for marketers" but the communities marketers' customers live in. For a fintech brand the live community is r/personalfinance and r/fintech. For a devops tool it is r/sysadmin. For a crypto product it is r/CryptoCurrency. Each operates under its own promotion regime, and none of them respond well to anything that announces itself as marketing.

For r/sysadmin specifically, our r/sysadmin posting playbook covers the exact phrases AutoMod is configured to remove and what survives.

The seven trip wires that exist on almost every subreddit in this database

Across the 25 subreddits above, seven patterns trigger removal almost universally. They are worth memorizing because they are nearly always automatic and nearly never reversible without modmail intervention.

1. URL shorteners (bit.ly, tinyurl, ow.ly) are auto-removed by AutoMod on roughly 70% of marketing-relevant subreddits and flagged as spam sitewide.

2. DM-bait phrases like "comment for the link", "DM me for the spreadsheet", or "check my profile" trip the most common AutoMod rules in marketing-adjacent subreddits.

3. Two posts of the same link to multiple subreddits inside 24 hours triggers Reddit's sitewide spam filter and can shadowban the account, not just remove the post.

4. Brand-named accounts (u/AcmeSoftwareOfficial, u/MyBrandTeam) attract immediate moderator scrutiny and downvotes in most communities. Personal accounts with disclosed affiliation outperform every time.

5. Affiliate links are auto-removed on virtually every marketing-adjacent subreddit. Most AutoMod configurations include the major affiliate domains as blanket blocks.

6. Domain bans propagate: a URL banned in one large subreddit's AutoMod can show up in dozens of others within a quarter, because moderators copy each other's AutoMod configurations.

7. Posting through a VPN or commercial proxy suppresses Contributor Quality Score and can quietly stop posts from appearing without any visible removal.

How to use this database operationally

The database is a starting filter, not a campaign plan. The condensed workflow our team uses: pick the three to five subreddits where audience overlap with the brand's customers is highest (more than five is almost always a mistake); map the five rule dimensions per subreddit using this v1 cut, then re-verify by reading the published rules and scanning the top removed posts in each community over the last 30 days; build accounts that pass each subreddit's gates before any promotional activity (usually 30–60 days of warm-up across two to three accounts per subreddit); separate the promotional and non-promotional cadence by approved lane (a mature B2B SaaS program typically uses two weekly threads plus a steady cadence of expert-answer comments in 3–4 organic threads per subreddit per week); and track removals per subreddit per account per week in a shared sheet, because most brand teams that fail on Reddit fail because nobody has visibility into the per-subreddit rejection rate until the bans land.

A removal rate above ~15% in any one subreddit means the AutoMod is treating the account or domain as suspicious and the next step is to stop posting, not to push harder. Our Reddit account infrastructure for brands post covers how those accounts are built and rotated. For the broader context of why Reddit failures happen, see why your Reddit marketing failed.

What changes quarter to quarter

Reddit subreddits change rules quietly. Mods update AutoMod configurations without announcements, large subreddits sometimes change gate thresholds, and sitewide policy updates (the September 2025 algorithm shift and the January 2026 ad-automation introduction are the two most recent) cascade into per-community behavior in ways that are not always documented. Our team re-verifies this database quarterly against three signals: the published rules in each subreddit's wiki, the modmail responses we get during active campaign work, and the removed-posts feed for each community. The quarterly drift averages 10–15% of the entries; about four to six subreddits change something material every three months. That cadence is why a single static "Reddit rules" PDF from a freelancer or course is almost always wrong by the time a brand uses it.

The agency case

For most growth-stage brands, the operational lift to maintain this database internally is doable: a competent in-house community manager can clear it in a quarter. The harder problem is the account infrastructure and per-subreddit content cadence on top of the rule map. Knowing that r/marketing requires 100 karma and a 60-day account is the easy part. Building three accounts that pass cleanly, generating non-promotional contributions for the 19-to-1 mix without sounding like an agency, and recovering when one of those accounts gets flagged; that is the part most teams discover they cannot sustain at the pace the channel demands. If the brand has the headcount, the DIY path is genuinely viable, and Signals makes the infrastructure layer easier. If the brand needs the channel working inside the next two quarters without building a dedicated team, that is the case for working with an agency.