The team messaging standard — essential infrastructure, expensive at enterprise scale
Short answer: No — but read on.
Slack sits in an uncomfortable middle ground. Not a scam, but a product where a meaningful share of customers walk away feeling like they were oversold or mishandled.
The strongest "this feels like a scam" signals tend to come from one of two places: marketing claims that don't match reality, or billing practices that make leaving harder than joining. Below are the 3 flags in those two categories we've documented for Slack.
In 2024, Slack's privacy policy allowed the company to use customer message data for training AI models, with opt-out requiring a specific email request rather than an in-product toggle. Many organizations were unaware they had never opted out. After public backlash, Slack updated the process.
Enterprise IT departments universally compare Slack's per-user cost against Microsoft Teams, which is included in Microsoft 365 subscriptions most enterprises already pay. The cost comparison frequently drives Teams adoption for budget-sensitive organizations.
Organizations on the free tier who exceed 90 days discover that message history before that window is inaccessible. Teams that use Slack as a de facto knowledge base face real information loss when old messages become unreachable.
Our AI scanner searches Reddit, Trustpilot, BBB, and news sources for fresh complaints from the past year, paraphrases what it finds, and adds anything new to this page. Takes up to 90 seconds.
For the full record — lawsuits, churn signals, support failures, and BBB filings — see the complete complaints page.