F5Bot deserves credit for being straightforwardly free and easy to set up: pick your keywords, get an email when they appear on Reddit, Hacker News, or Lobsters. No account required. For a small number of specific, low-volume keywords, that's often all you need.
What F5Bot does well
F5Bot tracks up to 200 keywords for free and emails you within minutes of a match appearing in a new Reddit post or comment, along with coverage of Hacker News and Lobsters. There's no dashboard, no account setup friction, and no cost — for narrow brand-name or product-name monitoring, it's hard to beat as a starting point.
Where keyword matching runs out
The tradeoff is the same one that shows up with any keyword-only tool: a match isn't the same as a buying signal. A keyword like your product category will surface every mention regardless of context — old threads, unrelated uses of the word, someone recommending a tool to a friend for personal use — with no way to tell those apart from an actual buyer without opening every email. Once a keyword generates more than a handful of matches a day, the noise tends to bury the signal, and there's no dashboard or digest to fall back on to triage it, just a stream of individual emails.
Side-by-side comparison
| MentionSpot | F5Bot (free tier) | |
|---|---|---|
| Price | Paid, from $39/mo | Free |
| Platforms | Reddit + X | Reddit, Hacker News, Lobsters |
| Matching method | Keyword pre-filter + AI relevance & intent scoring | Keyword match only |
| Buyer-intent classification | Yes — 5 stages | No |
| Dashboard / digest | Daily digest + real-time alerts | Individual emails only |
| Posts or replies for you | Never — read-only | Never — read-only |
When to use which
If you're tracking a handful of exact brand or product names and can tolerate reading every match yourself, F5Bot's free tier is a reasonable starting point. Once you're monitoring a whole category — not just your own name — and the volume of raw keyword matches makes the emails easy to start ignoring, that's usually the point where relevance and intent scoring earns its cost.
FREQUENTLY ASKED QUESTIONS
Common questions
Is F5Bot really free?
Yes, its base keyword-alert tier is free with no account required. F5Bot also offers paid tiers with more keywords and additional features.
Does F5Bot use AI to filter matches?
F5Bot's paid tiers add semantic/AI-assisted alerts. Its free tier is keyword matching without relevance or buyer-intent classification.
When do teams typically outgrow F5Bot?
When keyword volume produces more matches than someone can manually read and triage, and the goal shifts from 'don't miss a mention' to 'show me who's actually about to buy.'
PUT IT INTO PRACTICE
Keep the keywords. Add the intent scoring.
Tell us the keywords or category you're tracking. We'll show you what a scored, intent-classified feed looks like instead of a raw match stream.
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