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B2B SaaS · 2025

Echo
Filter.

Real-time scoring API for forms, signups and CRM data. Detects bots, fake leads and disposable emails before they pollute your funnel.

Real Leads
$82%
Bots Blocked
14%
Score Distribution
Disposable
3.2%
Latency
<80ms
Type
B2B API SaaS
Year
2025
Role
Solo Founder
Site
echofilter.com

Why this
exists

01
The Pain
Marketers and founders waste hours every week cleaning fake leads from forms. Sales teams chase ghosts. Conversion metrics lie.
02
The Insight
Most fake-lead detection happens at the analytics layer — too late. The right place to score is the form itself, in real time, before the lead ever reaches the CRM.
03
The Build
A simple POST endpoint: send the lead's data, get a quality score back in under 80ms. Plug it into any form, any stack.
04
Distribution
A WordPress plugin to lower the activation barrier — the largest CMS in the world is also the easiest place to test "this works".

What it
does

Real-Time Scoring
A single REST call returns a quality score per lead in under 80ms — fast enough to gate a form submission.
Bot Detection
Behavioral and signal-based detection. Catches headless browsers, cheap automation and obvious form spam.
Disposable Emails
Continuously updated list of disposable, throwaway and burner email providers.
Lead Quality Signals
Beyond just "real or fake": signals like business vs personal email, role mailbox, suspicious patterns.
WordPress Plugin
Drop-in plugin for WordPress sites that need lead protection without writing a line of code.
Tech Stack
Node.js REST API PostgreSQL Vercel Edge Stripe Metered PHP / WordPress TypeScript
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