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InboxShield

Started: 27/08/2025

Last Update: September 4, 2025

AI-Powered Spam & Phishing Protection for SMBs

A lightweight browser-based SaaS tool to help SMBs block phishing emails, tested with a 30-day landing page experiment.


1. SaaS Experiment – “InboxShield”

  • Title: InboxShield – AI-Powered Spam & Phishing Protection for SMBs
  • Tagline: Stop phishing emails before they reach your team.
  • Summary (Website): A lightweight browser-based SaaS tool to help SMBs block phishing emails, tested with a 30-day landing page experiment.
  • Detailed Body (Website):
    • Hypothesis: SMB owners are willing to pay $15–25/month for AI-driven inbox filtering that prevents phishing attacks.
    • Method: Built landing page + waitlist → $200 Google Ads → cold LinkedIn outreach → pricing survey → LOI collection.
    • Metrics:
      • Ad Spend: $200
      • CTR: 2.8% (Google Ads, keyword-targeted)
      • Landing Page Conversion (Cold): 7.2% (36 waitlist signups / 500 visitors)
      • Warm Outreach Conversion: 18% (9 signups / 50 contacts)
      • Total Waitlist: 45
      • Pricing Survey: $19 median acceptable monthly fee
      • LOIs: 4 companies committed to pilot at $19/mo
    • Outcome: Pivot. Strong interest but competitive landscape crowded (e.g., Mimecast, Barracuda). Decided to niche laterally into SMB-focused “compliance + security bundle.”

Notion Experiment Doc (Internal):

  • Hypothesis
  • ICP: SMB owners, 5–50 employees, no IT team
  • Acquisition Channels: Google Ads, LinkedIn cold outreach
  • Metrics Table (ad spend, CTR, CVR, CAC, interviews, LOIs)
  • Interviews: 8 (pain confirmed, budget resistance at scale)
  • Lessons: Phishing pain real, but incumbents too strong.
  • Decision: Pivot.

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