Best Subreddits for B2B Lead Generation: 16 Sorted by Who Posts There
Sixteen subreddits sorted by who posts there (founders, sales teams, marketers, IT and HR operators, other sellers), with member counts from a dated source, what each community asks for, the sidebar rules that get vendors banned, and one search string per group.
The best subreddits for B2B lead generation are the ones where your buyers ask for help, not the biggest ones. For most B2B sellers that means five communities, not sixteen: pick the group below that matches who you sell to (founders, sales teams, marketers, IT or HR operators), add r/SaaS or r/smallbusiness as a general feed, and skip the two rooms that are full of other sellers. The table gives sizes and rules; the sections give the search string for each group.
Which are the best subreddits for B2B lead generation?
Sixteen made the cut. Member counts come from GummySearch's public subreddit pages, each dated between 1 October and 1 November 2026 (the r/coldemail page carries no date), rounded as shown there; the sidebar will show today's figure. "Buyers post?" is a judgement from the most common post types on those pages: a community where "solution requests" (someone asking which tool or service to use) are among the top themes gets a yes.
| Subreddit | Members | Who posts | Buyers post? | Posting rule the sidebar states |
|---|---|---|---|---|
| r/SaaS | 838k | Software founders | Yes, tool requests are the top theme | Read before posting |
| r/startups | 2.1M | Early-stage founders | Sometimes | Most posts carry an "I will not promote" flair |
| r/Entrepreneur | 5.3M | Owners of every kind of business | Sometimes | No promoting your blog, consulting, book or MLM |
| r/smallbusiness | 2.6M | Local and small-business owners | Yes, accounting, POS and invoicing software | "This sub is not for advertisements!" |
| r/B2BSaaS | 32k | B2B software founders and operators | Yes, outreach tools and appointment setting | None published on the stats page |
| r/sales | 612k | Salespeople, mostly B2B | Yes, CRM and automation tools | Selling, recruiting or blog spam: immediate permanent ban |
| r/b2b_sales | 37k | B2B reps and founders who sell | Yes | "Read the rules" |
| r/salesdevelopment | 26k | SDRs and BDRs | Sometimes | Same ban rule as r/sales (official sister sub) |
| r/techsales | 67k | Tech reps, many job-hunting | Rarely | None published on the stats page |
| r/marketing | 2.0M | Marketers at brands and agencies | Yes, email platforms and PM tools | None published on the stats page |
| r/b2bmarketing | 104k | B2B marketers and consultants | Yes | None published on the stats page |
| r/agency | 103k | Agency owners and freelancers | Yes, CRM and website tools | None published on the stats page |
| r/msp | 251k | IT managed service providers | Yes, RMM and security tools | Weekly promo and webinar thread |
| r/sysadmin | 1.3M | In-house IT administrators | Yes, ticketing and remote desktop | None published on the stats page |
| r/recruiting | 221k | Recruiters, "recruiters only" | Yes, ATS and sourcing tools | None published on the stats page |
| r/LeadGeneration | 72k | Lead-gen vendors and job-seekers | Rarely | Buy/sell/trade posts go to a marketplace sub |
r/coldemail (75k) is the seventeenth and gets its own warning at the end: it is where your competitors ask each other for tools.
Two reading notes. "None published on the stats page" means the GummySearch page shows no rule line, not that the subreddit has none; every one of these communities has a sidebar and most have a rule about vendors. And a "Sometimes" in the buyers column means the community is dominated by advice and venting, with buying posts mixed in; you will need the search strings below to find them.
How to choose five subreddits from this list
Pick by your customer profile, not by size. A 37k community where every member does the job you sell to will give you more real conversations in a month than a 5.3M community where one post in fifty is a buyer. If you do not have a written profile yet, the ideal customer profile worksheet takes twenty minutes and makes the choice obvious.
Then apply three checks to each candidate:
- Do members ask "what do you use for X?" Open the subreddit, sort by New, and count how many of the last 50 posts ask for a tool, a vendor or a service. Fewer than three is a research community, not a lead source.
- Does the sidebar allow you to exist? Some communities ban vendors from posting but allow replies; some allow a disclosed mention; some ban both. Read the rules before your first comment, because the ban in r/sales is permanent.
- Can you answer the questions without selling? If your only useful contribution is "buy my product", you will be removed and will deserve it. If you can answer the first ten questions you see from experience, you belong.
Five subreddits is the practical limit for one person reading daily. More than that and you will skim, and skimming misses the one post that matters.
Where founders ask for tools: r/SaaS, r/startups, r/Entrepreneur, r/smallbusiness, r/B2BSaaS
Founders buy almost everything a B2B company sells, and they ask in public before they buy.
r/SaaS is the best single community on this list for anyone selling to software companies. GummySearch lists it at 838k members, up 400k in a year, with "solution requests" and "pain and anger" as the two most common post types and tech stack, project management and payment tools as the most reviewed categories (r/SaaS stats). People post their stack, their launches and what they are tired of. The downside is volume: a lot of posts are launches and "I built this", so sort by New and filter hard.
r/startups is less useful than its 2.1M members suggest. Its most used flair is "I will not promote", which tells you how the moderators feel about vendors, and the top themes are advice requests about co-founders, incorporation and struggling (r/startups stats). Worth watching for recommendation threads, not worth posting in.
r/Entrepreneur has 5.3M members and the sidebar says the space is for exchange of ideas, "not self-promotion", and asks members not to promote their blog, consulting, book or MLM (r/Entrepreneur stats). Buying posts exist (the stats page shows CRM and website builders as reviewed categories) but they are buried under general advice. Treat it as a keyword feed.
r/smallbusiness (2.6M) is where owners of local and service businesses ask about accounting, point-of-sale and invoicing software, which makes it the best community here if you sell to that segment. The one rule the sidebar states first: "This sub is not for advertisements!" (r/smallbusiness stats). Reply with answers, never with a link to your pricing page.
r/B2BSaaS is small at 32k but grew 149% in a year, and the recent posts on its stats page include a LinkedIn outreach tool comparison and a founder asking whether to use a done-for-you appointment-setting service or hire in-house (r/B2BSaaS stats). That is a buyer describing a budget decision in public. If you sell outbound tooling or services, read it daily.
Search string for this group (paste into Reddit search, sort by New):
subreddit:SaaS OR subreddit:B2BSaaS OR subreddit:smallbusiness title:("what do you use" OR "recommend" OR "looking for a tool" OR "alternative to")
Reddit search matches posts loosely and comments strictly, and the operators are case sensitive; the 20 copy-paste Reddit search queries article covers the syntax and the negative terms that remove job posts.
Where sales teams ask for tools: r/sales, r/b2b_sales, r/salesdevelopment, r/techsales
If you sell to sales teams (CRM, dialers, data, outreach, training), these four are your market talking to itself.
r/sales (612k members, up 93k in a year) is the largest and the strictest. The sidebar rule is one sentence: selling, recruiting or blog spam results in an immediate and permanent ban (r/sales stats). Inside that rule it is a goldmine, because reps review tools constantly; the stats page lists Apollo, Pipedrive and HubSpot as the most discussed automation tools and sales books as the most reviewed category of all. The useful posts are flaired "Sales Tools and Resources". Participate as a salesperson, never as a vendor.
r/b2b_sales (37k, up 152% in a year) is smaller and friendlier, and its top topics are sales, B2B, "looking for", leads and lead generation (r/b2b_sales stats). Advice requests dominate, and a good answer there is read by exactly the people a sales tool is built for.
r/salesdevelopment (26k) is the official sister community of r/sales for SDRs and BDRs and carries the same permanent-ban rule for selling and recruiting (r/salesdevelopment stats). Posts are about SDR and BDR work, meetings and remote roles at the top of the funnel. If your product makes an SDR's day shorter, this is where the SDRs are.
r/techsales (67k) is mostly about getting a tech sales job: the top topics on its stats page are "looking for a job", "sales role" and "tech sales", and job boards are the most reviewed products (r/techsales stats). Buying posts (one example is a request for email automation tools) do appear, but rarely. Watch it with a keyword alert rather than reading it daily.
Search string for this group:
subreddit:sales OR subreddit:b2b_sales OR subreddit:salesdevelopment selftext:("we use" OR "switching from" OR "any recommendations") NOT hiring
Where marketers and agencies ask for tools: r/marketing, r/b2bmarketing, r/agency
r/marketing (2.0M) describes itself as a support network for people at brands, agencies and vendors. The two most common post types are solution requests and venting, and email marketing platforms are by far the most reviewed category (r/marketing stats). Rules are not shown on the stats page; read the sidebar before your first comment, because a community this size has moderators who remove promotion quickly.
r/b2bmarketing (104k, up 169% in a year) is the fastest-growing community in this list and the one most likely to contain your exact buyer if you sell to B2B marketing teams. Advice requests dominate, including threads on how consultants do lead generation and what LinkedIn ads cost (r/b2bmarketing stats). CRM is the most reviewed category.
r/agency (103k, up 34k members in a year) is agency owners and freelancers talking about clients, strategy and partnerships, with GoHighLevel and HubSpot as the most discussed CRMs and WordPress and Webflow as the most discussed website builders (r/agency stats). If agencies are your customers, "struggling" and "clients" are the two most frequent topics; those threads are where an agency owner says what they would pay to fix.
Search string for this group:
subreddit:marketing OR subreddit:b2bmarketing OR subreddit:agency title:("tool" OR "software" OR "platform") AND ("recommend" OR "what do you use" OR "worth it")
Where IT and HR operators ask for tools: r/msp, r/sysadmin, r/recruiting
These three are vertical communities. They are useless if you sell to marketers and excellent if you sell into IT or talent.
r/msp (251k) is IT managed service providers, and it reviews more software than any other community here: the stats page counts hundreds of reviews across RMM, security and spam-filter tools, with Ninja RMM, Action1 and Atera at the top of the RMM list (r/msp stats). It also runs a recurring weekly promo and webinar thread, which is the one place a vendor may post as a vendor. Everywhere else in the sub, answer as an engineer.
r/sysadmin (1.3M) is in-house IT. Solution requests and advice requests are the top post types, "struggling", "annoying" and "frustrating" are the top topics, and ticketing systems and remote desktop software are the most reviewed products (r/sysadmin stats). Sysadmins downvote marketing language; write every reply the way an engineer would.
r/recruiting (221k, up 66k members in a year) is "recruiters only" by its own description, and its most reviewed category is applicant tracking systems, with Greenhouse, Recruit CRM and Loxo leading (r/recruiting stats). The "ATS, CRM & Other Technology" flair is the buying lane. If you sell recruiting software or services, this and r/msp are the two communities on this list where the tool conversation is most explicit.
Search string for this group:
subreddit:msp OR subreddit:sysadmin OR subreddit:recruiting title:("replacing" OR "moving away from" OR "alternatives to" OR "renewal")
Two subreddits to read for intelligence, not leads: r/LeadGeneration and r/coldemail
r/LeadGeneration (72k) sounds like the obvious choice and is the wrong one. Its top topics include "looking for a job" and "looking for a job WFH", and the solution requests on its stats page are of the type "1,000 verified leads for $12?", with buy/sell/trade posts directed to a separate marketplace sub (r/LeadGeneration stats). The members are mostly people who sell lead generation. Read it to learn what your competitors charge and complain about.
r/coldemail (75k, up 441% in a year) is the same, with better questions: solution requests are the top theme, deliverability and warm-up are the recurring pain, and tool threads like "best cold email tools, 2026 edition" appear regularly (r/coldemail stats). If you sell email infrastructure or data, this is a market. If you sell anything else, it is a room full of other outbound sellers.
What to do once you have found a buying post
A subreddit list only matters if the posts turn into conversations, and that part is manual on Reddit. The working method is covered in how to find B2B leads on Reddit: score the post with five questions before replying, answer in the thread with something the author can use, and move the conversation to where the person does business only if they invite it. Before you spend time on any author, run the five-minute qualification check; many of the people asking for tools on Reddit are students, job-seekers or vendors.
For daily reading, a free alert on your five subreddits saves an hour a day; Reddit keyword monitoring for leads compares five tools and a free method.
The same buyers also post the same complaints on LinkedIn, usually under their real name and job title, and that is where the watching can be automated: Intentsly's LinkedIn signals flag the people posting about your keywords or engaging with your competitors, score them against your customer profile, and hand them to an AI SDR that only sends LinkedIn messages. We booked 14 qualified demos in 14 days that way, with zero manual outreach, targeting founders complaining about cold outreach burnout. Intentsly does not monitor Reddit, so for the subreddits above, the search strings and a free alert are the toolkit.
Start with the five subreddits that match your buyer, read them for two weeks before you post, and keep a list of the questions you could have answered. Then download the Buying Signal Playbook: it lists the 12 buying signals worth chasing and 8 to ignore, with a script for each, and most of the 12 show up on Reddit as plainly as they do on LinkedIn.
FAQ
How many subreddits should I watch for B2B leads?
Five, read daily, is the practical limit for one person. Choose them by customer profile: one or two where your exact buyer works (r/msp for IT services, r/b2bmarketing for marketing teams), one general founder community (r/SaaS or r/smallbusiness), and one where your competitors' customers complain. Add more only when you have a keyword alert doing the reading for you.
Are small or large subreddits better for lead generation?
Small and specific beats large and general. A 30k community where every member does the job you sell to produces more buying posts you can act on than a multi-million member community where most posts are career advice. Large communities are still worth a keyword alert, because the absolute number of buying posts is high even when the share is low.
How do I know if a subreddit allows self-promotion?
Read the sidebar rules before your first comment, then read the last week of posts to see what the moderators actually remove. Look for a weekly promo thread (r/msp has one), a required flair like r/startups' "I will not promote", or a one-line ban like r/sales'. If nothing is stated, assume a disclosed mention in a reply is tolerated and a post about your product is not.
How do I find niche subreddits for my industry?
Search Reddit for the tools your customers already use, the certifications they hold and the job titles they have, and note which subreddits the results come from. Open the sidebar of each one: most link to related communities. Then check the stats page on GummySearch for member count and growth before adding it to your five.
Does Reddit work for B2B lead generation?
It works as a source of buying posts that you answer by hand, and it does not work as a channel you can automate or scale. Expect a handful of real conversations a month from five well-chosen subreddits, each one with a person who has already described their problem in writing. It is slow, and the people you reach are further along than any cold list.
What is the fastest way to find buying posts in these subreddits?
Use Reddit's own search operators (subreddit:, title:, selftext:, with OR and NOT in capitals), sort by New, and paste the search string from the section that matches your buyer. Check the results once a day. Set a free keyword alert for your competitors' names across the same subreddits so switching posts reach you the day they are written.
