Xail splits every message across independent email providers so that compromising any single provider — or any single server — exposes nothing but random noise. Information-theoretic security, running on infrastructure you already have. Already quantum-safe.
Information-theoretic security
Zero-knowledge architecture
Quantum-safe by design
No keys to steal, no server to breach
Patent pending (28 pages, 27 claims)
Traditional encrypted email concentrates all trust in a single provider. Xail eliminates that single point of failure entirely.
525
Ransomware attacks on U.S. gov entities (2018–2024)
Costing an estimated $1.09 billion in downtime alone. State-sponsored actors, hacktivist groups, and ransomware gangs actively target government email at every level.
$9.5M
Average cost of a public sector breach
Government breaches are among the costliest across all industries — driven by investigation complexity, legal liability, and remediation across interconnected systems.
148%
Surge in malware attacks on government agencies
Advanced persistent threats now use AI for spear phishing, social engineering, and coordinated attacks that bypass traditional email security.
R
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Architecture
How split-channel security works.
Xail doesn't encrypt your message and store the key somewhere. It splits the message so that each fragment is mathematically indistinguishable from random data.
01
Message is split on device
Using XorIDA (a published threshold sharing algorithm), the message is divided into shares on the sender's device. Each share alone is provably random — not encrypted, but information-theoretically destroyed.
02
Shares route through independent providers
Each share travels through a different email provider — agency email systems, approved providers, or any OAuth/IMAP-compatible service. No single provider ever sees enough data to reconstruct anything.
03
Threshold reconstruction on recipient's device
Only the recipient's device — which has access to the required threshold of shares — can reassemble the original message. In a 2-of-3 configuration, any two shares suffice.
04
No keys. No server. No trust required.
There is no key to steal, no server to subpoena, no certificate authority to compromise. The security is structural — built into the data itself, not layered on top.
Original message
Operation briefing: Asset extraction approved for 0300 local. Coordinates follow via secure channel...
Advantages over traditional government email encryption.
PGP, S/MIME, and gateway encryption all share a fundamental weakness: they concentrate trust in a key, a server, or a certificate authority. Xail eliminates that concentration.
No key management
Traditional encryption requires generating, distributing, rotating, and revoking keys. Xail has no keys. The split itself is the security mechanism. Nothing to manage, nothing to leak, nothing to steal.
Quantum-resistant by design
Information-theoretic security doesn't depend on computational hardness assumptions. There is no algorithm — quantum or classical — that can reconstruct a message from insufficient shares. The security is mathematical, not computational.
No single point of compromise
If an adversary compromises one provider, they get random noise. If they compromise a second, they get different random noise. They'd need to simultaneously breach multiple independent providers to reconstruct anything.
No single provider holds complete messages
A legal demand to one provider yields only opaque share data. No single entity — including Xail — holds enough information to reconstruct any message. Each share is mathematically indistinguishable from random noise.
P2P acceleration
Sub-second delivery. Zero server exposure.
Xail delivers messages via direct peer-to-peer connection when both parties are online —
achieving sub-100 millisecond latency on standard networks. Unlike Signal or WhatsApp,
Xail’s P2P transport requires no key exchange and manages no long-term keys.
The XorIDA split is the security. Each share at a relay is information-theoretically
indistinguishable from random noise — not because the encryption is strong, but because
a single share contains zero bits of information about the original message.
no keys
No key infrastructure to attack
Signal and WhatsApp maintain long-term key pairs — high-value targets for nation-state actors.
Xail has no keys. Per-message security derives from the XorIDA split. Nothing to harvest.
Nothing to decrypt in 10 years when quantum computers mature.
relay security
Relay compromise = zero information
Xail routes each share through a separate relay connection. No single relay receives more
than one share per message. A fully compromised relay — including one operated by an
adversary nation-state — obtains information-theoretically zero information about
message content.
record keeping
Email backup is the audit trail
Every P2P delivery is backed by email shares arriving seconds later. For government
communications, email delivery provides the permanent cryptographic record — satisfying
NIST 800-53 audit logging requirements. P2P provides speed. Email provides provability.
delivery proof
Proven reconstruction, not just delivery
The recipient’s device sends an acknowledgment only after successful XorIDA reconstruction —
not after delivery to a server. Tamper-evident. Exportable. Proves the message was
actually received and read on an authorized device.
vs. Signal
A different threat model — and a stronger one.
Signal P2P: transport + separate encryption layer. A compromised relay sees ciphertext.
If the long-term key is later obtained, the message decrypts.
Xail P2P: the XorIDA split is the security. A compromised relay sees one XorIDA share.
No algorithm — quantum or classical — can reconstruct a message from insufficient shares.
Not because the encryption is strong. Because the mathematics of information theory
makes it impossible.
Visual Security
See your protection level on every message.
Every message displays a colored border indicating the security configuration. Personnel can verify protection level at a glance — no settings menu, no security audit needed.
2-of-3 or higher splitting. Secure + fault tolerant. Recommended.
Federal government
Every department. Every agency. One security architecture.
Over 100 executive branch departments and agencies handle CUI — each with its own email security practices. Xail provides a single, provable standard across all of them.
Defense & Intelligence
Interagency Coordination
Secure messaging between DoD, DHS, FBI, CIA, and NSA using existing email infrastructure. Coordinate across agencies without standing up new classified networks for SBU-level communications.
Federal Civilian Agencies
CUI Protection (124 Categories)
The CUI program spans 124 categories across 20 organizational groups. Whether it’s IRS tax return data, Census PII, VA health records, or DOE research — Xail makes every email structurally unreadable to interceptors.
Congress & Judiciary
Legislative & Judicial Communications
Congressional offices drafting legislation, committee staff handling classified briefing follow-ups, judicial chambers exchanging case-sensitive correspondence. Constituent PII and policy deliberations protected without IT procurement.
Financial Regulators
Treasury, SEC, FDIC, Federal Reserve
Market-moving regulatory communications, bank examination findings, enforcement actions, and monetary policy discussions. Information that could affect global markets must be structurally protected, not just policy-protected.
Law Enforcement
FBI, DEA, ATF, Secret Service, Marshals
Investigative communications, witness information, informant handling, inter-agency task force coordination. Law Enforcement Sensitive data protected by mathematics — not by the honor system of standard email.
Healthcare & Science
NIH, CDC, FDA, VA Medical
Patient data, clinical trial results, drug approval communications, pandemic response coordination, and veteran health records. HIPAA compliance visible in every message border.
Defense & Military
From the Pentagon to the forward operating base.
Military communications face the most sophisticated adversaries on earth. Xail provides information-theoretic security that does not depend on the computational limitations of the attacker.
Military Operations
Operational Planning & Field Comms
Mission planning, operational orders, after-action reports, and field coordination. Xail routes through standard email — if the network can send email, it can send a Xail message.
Service Branches
Army, Navy, Air Force, Marines, Space Force
Cross-branch coordination, joint operations planning, personnel actions, and administrative communications. One solution works across all branches without per-branch IT procurement.
Combatant Commands
CENTCOM, INDOPACOM, EUCOM, AFRICOM
Geographic and functional combatant commands coordinating across time zones, networks, and classification levels. Xail secures the unclassified tier that carries the bulk of daily operational coordination.
Guard & Reserve
National Guard & Reserve Components
Part-time forces using personal email for readiness, training coordination, and mobilization planning. Xail bridges the gap between military and civilian email systems that Guard and Reserve members navigate daily.
Military Intelligence
SIGINT, HUMINT & Fusion Centers
Intelligence professionals sharing analysis, threat assessments, and collection priorities across organizational boundaries. Unclassified intelligence products that still require protection from adversary collection.
Military Families
Personnel & Family Communications
Service members communicating with families about deployments, medical issues, financial matters, and PCS moves. Personal information that should not transit unprotected email in hostile network environments.
Contractors & Research
Where government meets private sector and academia.
The boundary between government and its contractors, researchers, and grantees is where most email security breaks down. Different organizations, different IT policies — Xail bridges all of them.
Defense Contractors
Primes & Major Systems Integrators
Proposal development, contract negotiations, technical data exchange, and export-controlled information. Defense contractors handling ITAR/EAR-controlled data need provable email security that works across organizational boundaries.
National Laboratories
DOE Labs, DARPA Research, FFRDCs
Los Alamos, Sandia, Livermore, Oak Ridge — 17 national labs handling sensitive nuclear, energy, and defense research. Researcher-to-researcher and lab-to-agency communications secured without disrupting the scientific workflow.
IT & Cyber Contractors
Managed Service Providers for Gov
IT contractors managing government systems handle vulnerability reports, security assessments, incident response data, and system architecture documents. A breach of contractor email exposes the same data a direct breach would.
University Research
Federally Funded Research Programs
Universities receiving federal grants handle export-controlled data, sensitive pre-publication findings, and CUI from funding agencies. Academic email systems are among the least secure — Xail adds structural protection without requiring university IT changes.
Small Business
SBIR/STTR & Small Gov Contractors
Small businesses win 23% of federal contracts but rarely have dedicated cybersecurity staff. Xail requires no security team, no key infrastructure, no server deployment — just install and connect email addresses.
Construction & Infrastructure
Federal Facilities & Critical Infrastructure
Building specs for military installations, critical infrastructure designs, facility security plans. Construction contractors communicate sensitive building details via email every day with no encryption beyond TLS in transit.
State, Local & International
From city hall to the embassy. Every level of government.
State and local governments are the most targeted and least resourced. In 2024, municipalities from Rhode Island to Hoboken to Jacksonville Beach were compromised by ransomware gangs.
State Government
Governors, Agencies & State Police
State-level law enforcement, regulatory agencies, election administration, tax authorities, and health departments. Rhode Island lost 650,000 residents’ data in a single 2024 breach. Xail makes the data structurally useless to attackers.
Local & Municipal
Cities, Counties & School Districts
Municipal courts, police departments, public utilities, zoning boards, and school systems — all handling sensitive citizen data on legacy IT budgets. Xail costs less than a single breach response and deploys in minutes.
Tribal Government
Tribal Nations & Bureau of Indian Affairs
Tribal governments managing healthcare, law enforcement, land records, and sovereign communications. Often underserved by federal cybersecurity programs. Xail provides enterprise-grade security at consumer-grade complexity.
U.S. Embassies & Consulates
Diplomatic Communications Worldwide
The Diplomatic Security Service operates in 270+ locations worldwide. Embassy staff coordinate with the State Department, host country contacts, and other agencies across hostile network environments where local ISPs may be state-controlled.
Allied Governments
Foreign Government Internal Comms
Allied governments can deploy Xail for their own internal communications using existing email infrastructure across ministries. Open-source crypto library and published algorithm provide full auditability — no U.S. vendor trust required.
International Organizations
NATO, UN, EU & Treaty Organizations
Multinational organizations coordinating across dozens of countries and email domains. Xail works across any provider in any country — agency email systems, approved providers, or any OAuth/IMAP-compatible service. No centralized infrastructure needed.
CMMC & supply chain compliance
CMMC is now mandatory. Xail makes compliance structural.
As of November 10, 2025, CMMC compliance is a contractual prerequisite for DoD contracts. By 2028, it is mandatory for every solicitation involving FCI or CUI.
!
The problem: email is the #1 CUI leak
Current DFARS rules require CUI in email to use FIPS 140-2/140-3 encryption — or a password-protected attachment with the password sent separately. In practice, most contractors just hit send. The most commonly reported cause of PII breaches is failure to encrypt email.
01
Xail encrypts by default — no user action
When both sender and recipient use Xail, every message is automatically split. No “encrypt this email” button. No password-protected ZIP files. No training users to remember. Security is structural and invisible.
02
Flow-down is built into the invitation
When a prime sends a Xail message to a subcontractor, the subcontractor receives an invitation to join. The CMMC flow-down requirement — ensuring subcontractors protect CUI — becomes a natural part of communication itself.
03
Audit trail satisfies SPRS reporting
The Corporate Xail Server maintains complete audit logs — who sent what, when, delivery confirmation, and reconstruction events. Exportable evidence for CMMC assessments and SPRS affirmation of continuous compliance.
220,000+ companies affected
The Defense Industrial Base includes over 220,000 companies. CMMC requirements flow down to every subcontractor that processes, stores, or transmits FCI or CUI — regardless of company size.
Primes like Lockheed Martin and General Dynamics are already enforcing compliance on suppliers
Ineligibility for award if CMMC status is not current in SPRS at time of award
Potential False Claims Act liability for inaccurate compliance reporting
CMMC rollout timeline
November 2025 — NOW
Phase 1: Self-assessments begin
Level 1 and Level 2 self-assessments required for new contract solicitations. You are here.
November 2026
Phase 2: Third-party assessments
Level 2 C3PAO and Level 3 DIBCAC assessments may be required for applicable solicitations.
November 2027
Phase 3: Extend to active contracts
C3PAO requirements extend to option periods on existing DoD contracts.
November 2028
Phase 4: Full enforcement
CMMC mandatory for ALL applicable DoD contracts. No exceptions. No grace period.
Quantum readiness
Already quantum-safe. No migration required.
NIST has released post-quantum encryption standards. The government faces a 10–20 year migration costing billions. Xail does not need to migrate.
The “harvest now, decrypt later” threat
Adversaries are collecting your encrypted communications today.
The GAO warns that nation-state actors are already harvesting encrypted government data with the intention of decrypting it when quantum computers mature — potentially within 10–20 years. RSA, Diffie-Hellman, and elliptic-curve cryptography will be mathematically broken by Shor’s algorithm. Every message encrypted with these methods today is a time bomb. Xail messages are immune — not because the encryption is strong, but because each share contains zero information about the original message. No algorithm, quantum or classical, changes this mathematical fact.
Information-theoretic ≠ computational
Traditional encryption relies on computational hardness — problems hard for today’s computers but breakable by tomorrow’s. XorIDA provides information-theoretic security: each share is provably random. No amount of computational power changes this.
Zero migration cost
NIST estimates PQC migration will take 10–20 years and cost billions across federal systems. Xail requires no migration — it is quantum-safe by design. Deploy today and never face a forced algorithm transition.
Allied interoperability
RAND Corporation warns allied militaries must clarify their quantum cryptography strategy for interoperable secure communications. Xail provides a quantum-safe layer that works across allied nations without coordinated PQC algorithm adoption.
Deploy now, not in 10 years
NIST finalized its first three post-quantum standards in 2024 and selected a fifth algorithm (HQC) in 2025. But migrating existing systems will take a decade. Xail provides quantum-safe communications today, on existing email infrastructure.
Enterprise deployment
Corporate Xail Server for organizational control.
Agencies and contractors deploy a Corporate Xail Server that adds compliance infrastructure without weakening the underlying split-channel security.
eDiscovery
Authorized legal holds and search across all agency communications. Compliance copies encrypted with organizational key — accessible only under policy.
Data Loss Prevention
Content scanned before splitting. Messages containing restricted data are blocked before shares are transmitted. DLP integrates with existing agency rules.
Key Escrow
Organizational key escrow for authorized message recovery. Employees use the same Xail client — it connects to the corporate server instead of operating standalone.
Audit Logging
Complete audit trail for every message: who sent what, when, to whom, delivery status, and reconstruction events. Exportable for compliance review.
Admin Console & SSO
Centralized user management, policy enforcement, MDM integration, and single sign-on. IT administrators control security tiers, contact policies, and access.
Self-Hosted or Managed
Deploy on agency infrastructure, in a government cloud environment (GovCloud, IL4/IL5), or as a Xail-managed instance. You control where the server lives.
The architecture is the compliance.
Unlike traditional secure email that requires continuous policy enforcement to maintain security, Xail's split-channel architecture makes unauthorized access structurally impossible — not just prohibited.
No plaintext on any server — ever
All crypto operations client-side
Patent-protected algorithm — verifiable by any CISO
XorIDA is a patent-protected threshold sharing algorithm
Patent pending — 28 pages, 27 claims, 10 figures
3,300+ passing tests across backend and crypto
Compliance readiness
Designed for the frameworks government requires.
Xail's architecture maps directly to the security controls that federal and defense organizations must implement.
NIST 800-53
Controls
FISMA
Federal
CMMC
Defense
FedRAMP
Roadmap
HIPAA
Healthcare
SOC 2
Audit
NIST 800-171
CUI
ITAR/EAR
Export Control
DFARS 252.204-7012
Safeguarding
NIST 800-53 Alignment
Xail's architecture directly satisfies controls for encryption at rest and in transit (SC-28, SC-8), access enforcement (AC-3), information flow control (AC-4), and separation of duties (AC-5). The split-channel design provides defense-in-depth that maps to multiple control families simultaneously.
CMMC Level 2+ Readiness
For defense contractors handling CUI, Xail meets CMMC practices for encryption of CUI at rest and in transit, multi-factor authentication via multi-provider verification, and audit logging for all access events. The Corporate Xail Server adds organizational-level policy enforcement.
FedRAMP Authorization Path
Xail's thin backend architecture minimizes the FedRAMP assessment surface. The server handles only OAuth token exchange — no message content. The Corporate Xail Server can be deployed in agency-authorized environments (GovCloud, IL4/IL5) with full ATO inheritance.
Zero Trust Architecture
Xail is zero trust by construction — not by configuration. No component of the system trusts any other component. Email providers are treated as untrusted transport. The backend never sees content. Security doesn't depend on perimeter defense.
Comparison
Xail vs. traditional government email security.
Side-by-side comparison across the security properties that matter most for government communications.
Capability
Xail
S/MIME
PGP
Gateway Encryption
Information-theoretic security
✓
✗
✗
✗
Quantum-resistant
✓
✗
✗
✗
No key management
✓
✗
✗
✗
No single point of compromise
✓
✗
✗
✗
Works with existing email addresses
✓
✓
✗
✓
No recipient setup required
✓
✗
✗
✓
No single provider holds complete data
✓
✗
✗
✗
Open-source crypto library
✓
✗
✓
✗
Fault tolerance (provider outage)
✓
✗
✗
✗
Visual security verification
✓
✗
✗
✗
Sub-second P2P delivery
✓
✗
✗
✗
Relay compromise resistance
✓
✗
✗
✗
Proven reconstruction acknowledgment
✓
✗
✗
✗
Questions
Frequently asked by government and defense evaluators.
Technical and procurement questions from security officers, CISOs, and acquisition teams.
Is Xail FedRAMP authorized?
Not yet. FedRAMP authorization is on our roadmap. However, Xail's architecture significantly reduces the assessment surface because the thin backend handles only OAuth token exchange — no message content ever touches our servers. The Corporate Xail Server can be deployed within agency-authorized cloud environments (AWS GovCloud, Azure Government) with ATO inheritance.
What classification levels does Xail support?
Xail is designed for Controlled Unclassified Information (CUI), Sensitive But Unclassified (SBU), For Official Use Only (FOUO), Law Enforcement Sensitive (LES), and similar categories. It is not designed for classified (Secret/Top Secret) information, which requires dedicated classified networks.
How does this work with .gov and .mil email addresses?
Xail works with any email address that supports OAuth or IMAP access. Users connect their existing .gov or .mil addresses alongside additional agency-approved or personal email accounts. Each address serves as an independent channel for the split. No changes to the agency email system are required.
How does Xail help with CMMC compliance?
Xail directly addresses the NIST SP 800-171 requirement for encrypting CUI in email (SC.L2-3.13.8). Unlike traditional solutions that require user action to encrypt, Xail makes every message structurally secure by default. The Corporate Xail Server provides audit logging for SPRS affirmation and eDiscovery capabilities for legal holds — both required under the CMMC framework.
Can we self-host the Corporate Xail Server?
Yes. The Corporate Xail Server can be deployed on agency infrastructure, in a government-authorized cloud environment, or as a Xail-managed instance. Self-hosting gives agencies complete control over the compliance layer — eDiscovery, DLP, key escrow, and audit logs — within their own security boundary.
What's the procurement path?
Xail is available for pilot evaluation. We work with agencies on SBIR/STTR pathways, GSA Schedule pathways, and direct procurement for small contracts. Contact gov@xail.io for a tailored procurement discussion and technical briefing for your security team.
Secure your agency's most sensitive communications.
Request a technical briefing for your CISO, security team, or acquisition office. We'll walk through the architecture, the math, and the deployment options.
