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Krellix Mail
What Krellix Mail is
Krellix Mail collects email and documents from Microsoft 365 and IMAP for defensible preservation on Windows. Personal mode gathers the operator’s own correspondence, while Enterprise mode can collect another custodian’s mailbox, OneDrive, and SharePoint. Exports include native .eml files, searchable PDFs, original-format attachments, and a plain-text chain-of-custody manifest. The app calculates SHA-256 and MD5 hashes and seals the manifest with an RFC 3161 timestamp. Each export includes a self-running verification script that works without a Krellix license. Microsoft 365 sign-in uses MSAL in the system browser, and tokens rather than passwords are provided to Krellix. Collected data remains on the operator’s machine, with no telemetry or cloud upload stated. Plans are Solo at $299 a year, Firm at $799 a year, and Enterprise at $2,499 a year.
Who it suits
Krellix Mail is built for solo attorneys, in-house counsel, and HR investigators preserving email and documents. Enterprise mode suits collections involving another custodian and Microsoft storage locations.
What it does well
- Exports native emails, PDFs, and original attachments
- SHA-256 and MD5 file hashes
- Self-running verification without a license
- Local collection with no cloud upload stated
- Supports OneDrive and SharePoint in Enterprise mode
What to know first
- Windows platform only
- No free plan
- SOC 2 Type II audit is not on v3.x roadmap
- Enterprise plan starts at $2,499 a year
Limits
Solo supports one operator, while Firm supports up to five operator seats; both offer unlimited collections. Enterprise includes custodian, OneDrive, and SharePoint collection with unlimited collections. All listed plans are paid, and no free plan is available.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Enterprise | from $2,499 / year · custodian + OneDrive + SharePoint · unlimited collections | $2,499 a year |
| Solo | $299 / year · single operator · unlimited collections | $299 a year |
| Firm | $799 / year · up to 5 operator seats · unlimited collections | $799 a year |
As krellix.app lists them, read 4 Oct 2026. The maker's own page has the final word.
Getting started
- Open the Krellix Mail website
- Choose the Solo, Firm, or Enterprise plan
- Use a Windows computer to run the application
- Sign in to Microsoft 365 through MSAL in the system browser when collecting Microsoft 365 data
- Select Personal mode for your correspondence or Enterprise mode for custodian, OneDrive, and SharePoint collection
- Export the preserved material with its manifest and verification script
Verdict
Krellix Mail focuses on locally controlled collection, documented integrity, and independently verifiable exports. Its plans differ by operator seats and whether custodian, OneDrive, and SharePoint collection is required.
Questions
How much does Krellix Mail cost?
Solo costs $299 a year, Firm costs $799 a year, and Enterprise costs $2,499 a year.
Is there a free plan?
No. Krellix Mail is paid.
Which platforms does Krellix Mail support?
Krellix Mail supports Windows.
Can exports be verified without a Krellix license?
Yes. Every export includes a self-running verification script that does not require a Krellix license.
What does Enterprise collection cover?
Enterprise mode collects from another custodian’s mailbox, OneDrive, and SharePoint.
Where is collected data stored?
Collected data stays on the operator’s machine, and the security page says the app has no telemetry or cloud upload.
Facts from Krellix Mail's own pages
- Collection modes
- Personal mode collects the operator’s own correspondence, while Enterprise mode collects from another custodian’s mailbox, OneDrive, and SharePoint. · krellix.app, 4 Oct 2026
- Company
- Krellix LLC says it was founded in 2026 in Louisville, Kentucky. · krellix.app, 4 Oct 2026
- Compliance status
- SOC 2 readiness is planned, while a SOC 2 Type II audit is not on the v3.x roadmap. · krellix.app, 4 Oct 2026
- Credential security
- OAuth tokens are stored in Windows DPAPI via the MSAL secure cache, and the product uses delegated scopes rather than application permissions. · krellix.app, 4 Oct 2026
- Export formats
- Exports include native .eml files, searchable PDFs, attachments in original format, and a plain-text chain-of-custody manifest. · krellix.app, 4 Oct 2026
- Headquarters
- Louisville, Kentucky, United States · krellix.app, 28 Sept 2026
- Integrity
- The product computes SHA-256 and MD5 file hashes and seals the manifest with an RFC 3161 timestamp. · krellix.app, 4 Oct 2026
- Microsoft integration
- Microsoft 365 sign-in uses MSAL in the system browser, and Krellix receives tokens rather than the user’s password. · krellix.app, 4 Oct 2026
- Pricing model
- The product is sold with an annual license and unlimited collections, without per-seat, per-custodian, or per-gigabyte pricing. · krellix.app, 4 Oct 2026
- Privacy
- Collected data stays on the operator’s machine; the security page says the app has no telemetry or cloud upload. · krellix.app, 4 Oct 2026
- Purpose
- Krellix Mail collects email and documents from Microsoft 365 and IMAP for defensible preservation. · krellix.app, 4 Oct 2026
- Support
- The company says each pilot customer talks directly to the founder, who also reads every support email. · krellix.app, 4 Oct 2026
- Timestamp services
- DigiCert is the default public timestamp authority, with Sectigo and GlobalSign listed as failovers. · krellix.app, 4 Oct 2026
- Users
- The product is built for solo attorneys, in-house counsel, and HR investigators. · krellix.app, 4 Oct 2026
- Verification
- Every export includes a self-running verification script, and verifying an export requires no Krellix license. · krellix.app, 4 Oct 2026
Where Krellix Mail stands on Freedom251
- Legal Hold Software#11 of 26