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Reclaim Control of Your Slack Data.

Tired of getting your data as JSON gibberish? Try native browsing for Slack export. No cloud, no monthly fees. As simple as using Slack.

How Works

A simple, powerful workflow to own your data forever.

1

Export from Slack

Use Slack's native export tool to download your complete workspace history. We support both Standard and Enterprise Grid (1) exports.

2

Load into ChannelVault

Open ChannelVault and drag and drop your downloaded archive. Our software automatically processes and indexes all your messages and files.

3

Browse & Search Forever

Access your complete history with a familiar Slack-like interface. Search (1) instantly across all channels, even offline. Your data stays yours—permanently.

The Unspoken Cost of Your Slack Workspace

Is your organization paying a "data tax" to access its own history? Cloud-based archiving creates dependency, risk, and endless fees.

Walled Garden illustration

Locked Behind Walls

Slack’s “walled garden” approach forces organizations to keep paying just to access their own history. Vital records become gated features.

Paywall illustration

Paywalls Everywhere

Message history limits, costly guest accounts, and recurring subscription fees mean you’re constantly paying more for less control.

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Vendor Lock-In

Your most sensitive conversations remain locked inside Slack’s servers—until you pay up, migrate, or give up control entirely.

vs. Onna vs. Logikcull

We outperform expensive cloud platforms where it matters most: cost, security, and control.

  • INSTANT DEPLOYMENT

    Run a desktop app in minutes. No SaaS onboarding and complicated setup, no vendor bottlenecks.

  • ONE-TIME COST

    A perpetual license. No surprise bills, no “per-seat” tax, no recurring drain on budgets.

  • DATA SOVEREIGNTY

    Your archive lives behind your firewall, not on a third-party server. Total control, zero compromise.

  • MAXIMUM SECURITY

    Offline-first and air-gap capable. Remove the public attack surface that cloud tools expose.(2)

  • EASE OF USE

    No training required. Our interface feels instantly familiar to Slack users.

  • LIGHTNING-FAST EDISCOVERY

    Search entire archives instantly, even offline. Cloud searches crawl at the mercy of server load. (1)

Key Benefits for Your Organization

Gain security, efficiency, and total control over your most sensitive communications.

Unmatched Security & Compliance

GDPR, HIPAA, FINRA, SEC—compliance requires control and trust. ChannelVault keeps your data where it belongs: in your hands.

Radical Cost Efficiency

Stop paying for inactive users. Eliminate recurring subscription fees. It pays for itself within months when compared with SaaS solutions.

Effortless Knowledge Management

Preserve priceless context when employees leave. Access it instantly through a familiar interface.

When Slack Becomes a Liability

Real organizations facing real-world breaches and lock-in challenges.

Disney Data Breach

A 1.1TB Slack breach exposed unreleased projects and confidential communications, forcing Disney to ban the platform internally.

EA Games Infiltration

Hackers bought a stolen Slack cookie and tricked IT into granting access—stealing valuable game source code in the process.

Uber Compromise

An 18-year-old hacker hijacked Slack to post inside Uber’s systems—proof that Slack itself can be the weak link in security.

What Users Are Saying

Direct experiences from the Slack community, shared on Reddit.

“Slack’s free model is restrictive—90-day message history just isn’t enough. We had to leave for something more open.”
– r/opensource
“Our company pulled the plug on Slack after 8 years. Two weeks to migrate 100+ integrations—complete nightmare.”
– r/devops
“We moved to Rocket.Chat because Slack’s guest access would have cost us $18k a year. Open APIs made it a no-brainer.”
– r/sysadmin

Ready to Reclaim Your Data?

Download your free trial today—no credit card, no recurring fees. Take back control of your Slack history.

Frequently Asked Questions

Why isn’t the beta binary digitally signed?

The current beta build of is provided unsigned for rapid testing and feedback purposes. Our signing infrastructure is not yet finalized for public release builds. Once the full version is launched, all binaries will be properly signed and verified for integrity and authenticity.

Is it safe to run the unsigned beta?

Yes. The beta is distributed directly through Mestrio’s official channels only. You can verify the binary checksum against the values provided on our site to ensure authenticity. Always avoid downloading from third-party sources.

When will the signed release be available?

We expect signed production builds to be available at the time of public release, following internal security review and notarization. Updates regarding release timelines will be announced through our mailing list and on mestr.io.

(1) Beta and trial only works with free and pro workspaces. Search and Ediscovery features can be demoed on request.

(2) No data leaves the app. Application will request external data from slack to download binaries, 3rd parties to get links and attachments, and to Mestrio to check for updates.