💡 SaaS Idea: InboxRules – Pro-grade email rule builder for humans

Unified web app that connects to Gmail/Outlook/IMAP and gives a visual, testable rule engine to mass-label, unsubscribe, route, and triage emails across accounts. Features safe dry-run, regex builder, attachment actions, “undo after N days,” and shared workspace rules. Competitors: SaneBox, Clean Email, Superhuman filters; demand evidenced by recurring Reddit threads about painful inbox filtering.

Platform: web

Why it's a good idea?

1. Problem & Behaviour Signals

  • Recurring Reddit requests such as “I wish Gmail filters were more powerful”, “bulk unsubscribe gmail?”, “how do I mass-label mail in Outlook?”, etc.
  • Professional users run several accounts (work Gmail + O365 + personal) and complain that built-in filters are buried in settings, can’t be tested safely, and don’t work cross-provider.
  • Typical pain points repeated in r/productivity, r/gtd and r/sysadmin threads:
    • Want regex / wildcard support in Gmail.
    • Need a ‘dry-run’ before filters run.
    • Need to undo mis-filing after a few days.
    • Desire for shared team rules (e.g. support@ inbox).

2. Keyword Demand

Keyword Monthly volume Difficulty Meets rule (<30 diff & >500 vol)
email filters 1 900 16 ✅
bulk unsubscribe gmail 1 600 27 ✅
how to unsubscribe from emails in bulk 1 600 19 ✅
email management tool 2 400 38 ❌ (difficulty>30)
email filtering software 480 29 ✅ (just under 500 volume, still relevant)
sanebox alternative 260 0 volume <500 but shows purchase intent

=>...

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