Best Subreddits for Marketing by Niche: SaaS, Ecommerce, Agencies and Creators

Before you use any list

Subreddits change their rules often, and many ban self-promotion outright. Treat every name below as a candidate, not a recommendation. Read the rules in the sidebar, look at what gets upvoted, and check recent removed posts before you target any of them.

SaaS and software

• r/SaaS: founders discussing pricing, growth and tooling.
• r/startups and r/Entrepreneur: broad founder communities. Large, so comments need to be early and specific.
• r/smallbusiness: owners asking which tools to use. Good for practical, problem-solving answers.
• Tool-specific communities (for the software your product integrates with), where users ask how to do things.

Ecommerce and DTC brands

• r/ecommerce and r/shopify: store owners discussing apps, ads and fulfillment.
• Hobby and product-category communities where your customers spend time, such as fitness, cooking, outdoors or home.
• "Buy it for life" style communities, where people ask for durable recommendations. Most of them strictly ban brand promotion, so read carefully.

Agencies and freelancers

• r/marketing, r/digital_marketing and r/PPC: practitioners comparing tactics.
• r/SEO: technical discussion. Answers need real depth.
• r/freelance: questions about clients, pricing and tooling.
• Industry communities for the clients you serve, where you can answer questions as an expert.

Creators and personal brands

• Communities around your topic, not around "growing an audience". People follow experts, not marketers.
• Platform communities (for YouTube, newsletters, podcasts) for creator-to-creator discussion.

A five-minute fit check

• Are there several new text posts a day? Too quiet means nobody sees your comment; too busy means it gets buried.
• Do posts ask questions your product or expertise can answer?
• Do the rules allow mentioning your own product, and under what conditions?
• Do helpful, detailed comments get upvoted, or does the community prefer jokes?

Putting it into redditbot.dev

Add the communities that pass the check to a campaign, starting with one or two. Use keywords so the bot focuses on relevant threads, and review its comments after the first few days. Drop subreddits where comments get removed or ignored, and add new candidates as you learn.