Communities
F5Bot in Larvabot
Real-time keyword alerts from Reddit, Hacker News and Lobsters.
What it is
F5Bot emails you when your keywords appear in new posts and comments. It matches exact phrases, ignores capitalisation, and offers filters such as whole words only or posts only.
Free tier
Checked September 2026F5Bot's free plan includes keyword alerts with basic filters. f5bot.com ↗
What Larvabot uses it for
- ✓Main source of Reddit and Hacker News threads
- ✓Each project can have its own free F5Bot account: alerts sent to that project's address are filed under it, others by the exact keyword that matched
How Larvabot keeps it free
No API calls at all: Larvabot reads the alert emails from your inbox, and alerts for keywords no project owns are ignored.
More on the quota guard →Set it up
- 1On the project's F5Bot tab, use the suggested address (your connected inbox plus +project) and save
- 2Sign up at f5bot.com with that address
- 3Add the 5 keywords listed there; the status line turns green when F5Bot's first email arrives
No API key needed.
Step-by-step F5Bot setup in the docs →Works alongside
Put F5Bot to work for your business
Larvabot finds your customers: leads to email, conversations on Reddit, forums and social media, and directories. One flat fee from $19 a month with unlimited use and no credits, because it runs on free tiers like this one.