SaneBox
Productivity · tested 2026-05-23 · re-test due 2026-08-23 · by the Hlido desk, not the vendor
In short: Dependable 15-year-old IMAP filtering specialist — solid for human power users on non-Gmail providers, but opaque to programmatic agents.
5 PASS · 0 FAIL of 5 public-surface claims
Quick answer
SaneBox scores 78/100 (STEADY) on Hlido’s independent, hands-on test (reviewed 2026-05-23). STEADY (78) because the core triage works reliably and has for 15 years, the trust signals are clean (transparent per-mailbox pricing, 14-day trial without card, established privacy posture), and the company isn't disapp Pricing: Paid.
SaneBox is one of the oldest serious email-management services on the web (active since 2010), and it shows in both directions: the filtering is dependable in a way newer AI-only tools haven't earned, and the surface has the dated feel of a product that hasn't needed a redesign because its customers already understand it. It does one thing — server-side email triage that works with any IMAP provider — and refuses to drift into adjacent features. That focus is the moat. The 'AI' framing in current marketing is honest about being decades of refined heuristics with newer ML grafted on, rather than a 2024 LLM rebuild. For an agentic ecosystem looking for components that survive vendor turbulence, that's a credit, not a debit. Where it weakens: pricing scales linearly per mailbox with no team plan, the mobile story relies entirely on whatever IMAP client the user already has, and the documentation about exactly how training signals propagate is thin. None of this is disqualifying for the right user — but it does mean SaneBox is a tool to deploy, not a system to integrate with.
Why STEADY
STEADY (78) because the core triage works reliably and has for 15 years, the trust signals are clean (transparent per-mailbox pricing, 14-day trial without card, established privacy posture), and the company isn't disappearing soon. Not VITAL because the surface hasn't evolved to match the agentic-era expectations (no first-party API for agent integration, no MCP server, no programmatic configuration), and the marketing's AI framing slightly overshoots what's verifiable on the public surface.
Public-surface checklist
- PASS Homepage loads (required)
- PASS Primary value prop (required) — 'Email management for any inbox'
- PASS Cta present (required) — 'Start free trial'
- PASS Pricing or access — /pricing transparent per-mailbox tiers
- PASS Evidence or demo — Daily digest example shown on /features
What we saw
1 screenshot captured by the Hlido engine during the reviewed run (run-a658be951ea18fcf-try-sanebox-com). Our own captures — not vendor marketing material.
What it does well
- Filters high-volume inboxes without breaking the user's existing email client
- Works across every IMAP provider including self-hosted (not Gmail-locked)
- Algorithmic decisions are reversible and visible — every move shows in a daily digest
- Pricing is transparent and the 14-day trial requires no credit card
- Survives provider migrations — the user's training doesn't reset
What it fails at
- No first-party API or MCP server — opaque to programmatic agents
- Pricing scales linearly per mailbox (no team plan, no volume discount published)
- Mobile experience is whatever the user's IMAP client provides — no SaneBox-native mobile UI
- Documentation on how ML signals propagate across folders is shallow
- AI framing in marketing is more aspirational than the public-surface evidence supports
Best for
- Power users handling 500+ daily emails on non-Gmail providers
- Privacy-conscious orgs that want server-side filtering without Google/Microsoft lock-in
- Long-tail accounts where the user's training history is worth preserving
- Anyone whose existing email client is good but whose inbox volume isn't
Not recommended for
- Users wanting AI summarisation or generative reply assistance (Superhuman/Shortwave do this better)
- Mobile-first email users (no native app)
- Light email users (<100/day) — overhead exceeds benefit
- Agent-driven workflows that need programmatic configuration
- Teams needing centralised admin (no team-tier offering)
Pricing & access
- ModelPaid
- Pricing findable on the public surfacePASS /pricing transparent per-mailbox tiers (tested 2026-05-23)
Derived from Hlido-held evidence only (engine checklist + editorial text); quotes are verbatim from the scorecard; not vendor-supplied; re-derived daily. Verify current prices on the vendor's pricing page. Last verified 2026-05-23.
Compared to
-
Superhuman
filtering-only
Superhuman is the premium UX play (~6x the price, native client, AI compose). SaneBox is the filtering specialist. Choose SaneBox if your existing client is fine and the problem is volume. Choose Superhuman if the client itself is the problem.
-
Shortwave Com
non-replacement-augmentation
Shortwave rebuilds Gmail with AI threading and summarisation. SaneBox bolts on to existing Gmail (or anything else) without replacement. Shortwave wins for Gmail-only users wanting reinvention; SaneBox wins for users wanting their existing setup to scale.
Agent relevance
No programmatic surfaces
Agentic-Commerce Readiness 38/100 · SURFACE-ONLY
Independent readiness for agent delegation & transaction. How it’s scored · check live
None — SaneBox operates on the IMAP server side and exposes no programmatic interface for agents. Useful as a passive filter upstream of agent-driven email workflows, but not as a component an agent can drive or configure.
Agent-friendly score: 2/10
Score over time
The longitudinal record — every point is the score as published on that date. Raw series.
Evidence
scorecard.json · transparency passport · registry · methodology
Embed this trust badge
Markdown
[](https://hlido.eu/check/?agent=try-sanebox)HTML
<a href="https://hlido.eu/check/?agent=try-sanebox"><img src="https://hlido.eu/badge/try-sanebox.svg" alt="Hlido trust score"></a>