Krellix Mail
Krellix Mail collects email and documents from Microsoft 365 and IMAP for defensible preservation.
What Krellix Mail is
Krellix Mail collects email and documents from Microsoft 365 and IMAP for defensible preservation. Its Windows app offers two collection modes: Personal gathers the operator’s own correspondence, while Enterprise can collect from 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 product computes SHA-256 and MD5 file hashes and seals the manifest with an RFC 3161 timestamp; every export also includes a verification script that works without a Krellix license. Microsoft 365 sign-in uses MSAL in the system browser, and the app receives tokens rather than passwords. Collected data stays on the operator’s machine, and the security page says the app has no telemetry or cloud upload. Krellix Mail is paid, with Solo at $299 a year, Firm at $799 a year, and Enterprise at $2,499 a year. The plans offer one operator, up to five seats, and custodian plus OneDrive and SharePoint collection, respectively.
Good
- Exports searchable PDFs and native .eml files
- Includes a chain-of-custody manifest and verification script
- Collected data stays on the operator’s machine
- Microsoft 365 sign-in uses tokens, not passwords
Watch out
- Windows platform only
- No free plan
- Solo costs $299 a year
- SOC 2 Type II audit is not on the v3.x roadmap
Who it suits
Krellix Mail suits solo attorneys, in-house counsel, and HR investigators who need to preserve email and documents. Its Personal and Enterprise modes cover an operator’s own correspondence and collection from other custodians.
Verdict
Krellix Mail combines collection, export, and verification features for defensible preservation. Consider its Windows-only availability and annual plan costs when choosing it.
Plans and prices
From Krellix Mail's own pricing page, checked 4 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Solo | $299 a year | single operator · unlimited collections · $299 / year |
| Firm | $799 a year | up to 5 operator seats · unlimited collections · $799 / year |
| Enterprise | $2,499 a year | custodian + OneDrive + SharePoint · unlimited collections · from $2,499 / year |
The facts
Each one read from Krellix Mail's own pages, with the date it was checked.
What it does
- Collection modes
- Personal mode collects the operator’s own correspondence, while Enterprise mode collects from another custodian’s mailbox, OneDrive, and SharePoint.checked 4 Oct 2026
- Compliance status
- SOC 2 readiness is planned, while a SOC 2 Type II audit is not on the v3.x roadmap.checked 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.checked 4 Oct 2026
- Export formats
- Exports include native .eml files, searchable PDFs, attachments in original format, and a plain-text chain-of-custody manifest.checked 4 Oct 2026
- Integrity
- The product computes SHA-256 and MD5 file hashes and seals the manifest with an RFC 3161 timestamp.checked 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.checked 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.checked 4 Oct 2026
- Privacy
- Collected data stays on the operator’s machine; the security page says the app has no telemetry or cloud upload.checked 4 Oct 2026
- Purpose
- Krellix Mail collects email and documents from Microsoft 365 and IMAP for defensible preservation.checked 4 Oct 2026
- Support
- The company says each pilot customer talks directly to the founder, who also reads every support email.checked 4 Oct 2026
- Timestamp services
- DigiCert is the default public timestamp authority, with Sectigo and GlobalSign listed as failovers.checked 4 Oct 2026
- Users
- The product is built for solo attorneys, in-house counsel, and HR investigators.checked 4 Oct 2026
- Verification
- Every export includes a self-running verification script, and verifying an export requires no Krellix license.checked 4 Oct 2026
The company
- Company
- Krellix LLC says it was founded in 2026 in Louisville, Kentucky.checked 4 Oct 2026
- Headquarters
- Louisville, Kentucky, United Stateschecked 28 Sep 2026
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