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[ARTICLE · art-2497] src=dev.to pub= topic=startups verified=true sentiment=· neutral

I built a mutual SNS marketing platform — here's what I learned

A mutual SNS marketing platform called mafull.com, where AI automatically generates promotional posts and resizes images for multiple social media channels to help indie hackers and small startups avoid expensive paid ads. The founder notes that acquiring initial users is extremely difficult due to low conversion from cold emails and a lack of trust in the "mutual marketing" concept. The platform is currently live and free to use, with the founder seeking feedback and the first 10 real users for testing.

read1 min views9 publishedMay 20, 2026

Running paid ads is expensive. Most indie hackers and small startups can't afford $5k/month on Facebook or Google ads. So I started thinking — what if we just helped each other? A platform where: AI automatically writes 17 promotional posts for every channel — Instagram, YouTube, TikTok, X, Facebook, Naver Blog, Threads. Images auto-resized for every platform. Getting the first users is hard. Really hard. Cold emails get ~30% open rate but low conversion. The concept of "mutual marketing" is new to most people. Trust is the biggest barrier — "will anyone actually promote me?" Still looking for the first 10 real users to test this. Would love your feedback: Live at mafull.com — free to start.

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