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Klorn
Summary
Your inbox isn't the problem — it's the missing link between a scattered thread, a calendar conflict, and the reply you need to send before the investor meeting.
Klorn pulls mail, calendar events, and AI-generated signals into a single decision queue, grouping related context onto one card before asking you to approve any action. Nothing — no reply, no schedule change — leaves your workspace until you confirm it. The vendor describes four signal tiers: Push for urgent items, Queue for batched review, Silent for noise, and Auto for routine pre-sorted items that still require your sign-off. The architecture holds well for solo professionals managing high-stakes correspondence. It strains the moment you need agents that act on their own or when your team needs shared queues.
Bottom line: Pick Klorn if your problem is approving the right things faster — not if you need agents that execute tasks while you sleep.
Pricing Plans
SubscriptionLast verified 2 weeks ago- Price
- $7.99/mo
- Free Tier
- 7 days free trial
KLORN PRO
7 days free, then $7.99/mo on the web. Cancel anytime.
- Only get interrupted by mail that actually matters
- Klorn auto-handles the noise while you're away
- A morning brief of what needs a decision
- Works on iPhone, web, and desktop
Self-hosted
Self-host it free u2014 Klorn is open source (AGPLv3)
- Open source
- Self-hostable
View full pricing on klorn.ai →
Pricing may have changed since last verified. Check the official site for current plans.
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Pros
Sign in to edit- Approval gate on every outbound action, so no reply or calendar change leaves your workspace without explicit confirmation — which means you avoid the class of AI errors where a draft goes out half-finished.
- Four-tier signal sorting (Push, Queue, Silent, Auto) compresses a noisy inbox into a ranked decision list, so you stop triaging and start deciding.
- Evidence bundled onto each decision card — related threads, meeting context, and open tasks grouped before you act — which means you approve with full context instead of tab-switching to reconstruct it.
- Self-hostable under AGPLv3, so teams with data residency or privacy requirements can run the full stack on their own infrastructure without paying the hosted tier.
- Auditable daily receipt of every approved action, so you have a traceable log if a partner or investor asks what was sent and when.
Cons
Sign in to edit- The approval-first model is the product — which means any workflow requiring autonomous execution while you're offline breaks by design. Teams that need agents to process and reply to routine mail without a human sign-off will abandon Klorn for a tool that allows autonomous sending.
- No API is available, so Klorn cannot be wired into external systems like a CRM, Slack, or a ticketing tool. Teams that need signals from those sources to appear in the decision queue have no supported path to connect them.
- Invite-only beta access with a hard cap means teams evaluating it for a production rollout cannot onboard on their own timeline — access depends on manual approval from the founder, with no guaranteed turnaround outside of KST waking hours.
- Google account is the only supported connection the page describes. Teams running on Microsoft 365 or other mail providers have no documented path to use the product.
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About
- Platforms
- iPhone, web, desktop
- API Available
- No
- Self-Hosted
- Yes
- Last Updated
- 2026-06-30T12:42:22.091Z
Best For
Who it's for
- Professionals managing high-volume email and meetings
- Users who want AI assistance without autonomous sending
- Teams needing auditable decision logs
What it does well
- Prioritizing investor or partner follow-ups from scattered email threads and meetings
- Reviewing deployment or security risks with attached evidence before action
- Consolidating daily mail and calendar items into one approval step
Integrations
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Frequently Asked Questions
- Is Klorn free?
- Klorn has a permanent free tier alongside paid upgrades (paid plans from $7.99/mo). You can keep using a baseline version indefinitely without paying.
- Is Klorn open source?
- Yes. Klorn is open source.
- Can I self-host Klorn?
- Yes. Klorn supports self-hosting on your own infrastructure.
- What platforms does Klorn support?
- Klorn is available on: iPhone, web, desktop.
Hours Saved & ROI Stories Community
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Curated lists that include this category
Most email AI tools automate the sending. Klorn is built around the opposite bet: that the actual bottleneck is figuring out what deserves a decision, not executing after you’ve decided. The core workflow is a four-step loop — observe signals from mail and calendar, condense them into short cards with attached evidence, draft replies or schedule changes as staged drafts, then surface one explicit approval step before anything external happens. The vendor describes this as a ‘decision queue’ rather than an inbox, and a daily log records every action taken.
The differentiating design choice is the approval gate. Each decision card groups related signals — an unanswered thread, a calendar block, and an open task — into a single view with context about risk and next action, then holds that action until you tap Approve, Edit first, or Hold. That means every outbound reply or calendar change is traceable to a specific approval event, which the vendor positions as an auditable log.
Klorn is built for professionals running high-volume correspondence who want AI filtering but not autonomous sending — the docs describe it as explicitly not acting on your behalf. The self-hostable, AGPLv3 open-source release means teams with data-handling requirements can run it on their own infrastructure without touching the paid tier. Where it breaks: teams that need shared queues across multiple users, or workflows where the agent should act without a human in the loop, will find the approval-first architecture a ceiling rather than a feature.
As of the page scraped, Klorn is in invite-only beta with a cap of 100 testers pending a Google CASA security review. Google account integration is required; no API is exposed for external system connections.