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Limited self-service options for mid-market organisations
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4.5/5
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Published: January 20, 2026
Last updated: March 3, 2026
Reviewed by: SmartFinPro Research
Fact-checked: Oct 5, 2026
What changed since last update:
Pricing and fee information verified against provider website
Feature availability and regulatory status re-confirmed
Competitor comparison data refreshed
Frequently Asked Questions
Yes. Proofpoint provides UK GDPR-aligned Data Processing Agreements, UK data residency options for email processing, privacy by design architecture, and data retention controls that meet ICO requirements.
Proofpoint complements NCSC Mail Check by implementing and enforcing DMARC, SPF, and DKIM policies that Mail Check monitors. Together they provide comprehensive email authentication and domain protection for UK organisations.
Proofpoint uses AI to detect BEC by analysing email headers, sender behaviour, domain similarity, display name spoofing, and communication patterns. It flags suspicious payment requests and executive impersonation attempts before they reach the recipient.
Yes. Proofpoint supports FCA PS21/3 by protecting email as a critical business service, providing comprehensive audit logging, maintaining 99.99% availability, and offering incident response documentation for regulatory reporting.
Yes. Proofpoint integrates seamlessly with Microsoft 365 as a secure email gateway or via API integration. It adds protection layers beyond native Microsoft Defender for Office 365, which is particularly important for FCA-regulated firms.
Proofpoint's false positive rate is designed to decline over the first few months of deployment as its machine learning models calibrate to an organisation's specific email patterns, and independent reviewers consistently rate its false positive rate as lower than most competing solutions.
Yes. Proofpoint protects major UK banks, asset managers, and insurance companies. Its threat intelligence includes specific tracking of threat actors targeting UK financial services, and it aligns with FCA, PRA, and NCSC requirements.
Yes. Proofpoint offers GBP billing for UK enterprise customers with VAT-inclusive invoicing. Pricing is customised based on user count and features required.
Research Methodology & Disclosure
Last fact-check: Oct 5, 2026
Reviewed against provider disclosures and public regulator guidance.
Primary sources: FCA, Bank of England, FSCS, FOS, and provider disclosures.
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What is Proofpoint Email Security?
Key Findings
Key Findings & Analysis
Industry-leading email threat detection with a 99.99% catch rate across all threat categories
NCSC Mail Check and DMARC integration providing comprehensive UK email authentication
Advanced AI-powered BEC and impersonation protection blocking sophisticated attacks
Comprehensive data loss prevention purpose-built for UK regulatory data patterns
Bottom line: Proofpoint Email Security is the premier email protection platform for UK enterprises and FCA-regulated financial institutions that require best-in-class threat detection, NCSC alignment, and UK GDPR-compliant data residency.
Proofpoint Email Security is the market-leading email protection platform used by the majority of FTSE-100 companies and major UK financial institutions. The platform provides advanced defence against phishing, malware, business email compromise, and data loss through email — the attack vector responsible for over 90% of cyber incidents affecting UK organisations according to government reporting. Built on a threat intelligence network that processes over 2.8 billion emails daily, Proofpoint identifies and blocks emerging attack patterns within minutes of first detection, giving UK enterprises a critical time advantage over threat actors.
For UK financial services firms operating under FCA, PRA, and NCSC oversight, Proofpoint addresses the full spectrum of email-borne risk. The platform sits at the gateway level, inspecting every inbound and outbound message before it reaches employee inboxes, whilst simultaneously providing advanced URL rewriting, attachment sandboxing, and real-time click-time analysis. Unlike native Microsoft 365 security, which provides baseline protection, Proofpoint adds dedicated layers specifically engineered for the sophisticated threat landscape that targets regulated financial institutions.
Which deployment option should UK firms evaluate first?
Source: Proofpoint Documentation · NCSC UK · Gartner
2.8B+
Emails Analysed Daily
2024-2026
Gartner Leader
AAA
SE Labs Rating
Mar 2026
Last Verified
Key Features for UK Finance Teams
1. Advanced Threat Protection
Proofpoint's multi-layered detection engine combines machine learning, behavioural analysis, and real-time sandboxing to deliver industry-leading protection against the full range of email-borne threats. The platform analyses every component of an inbound message — headers, body text, embedded URLs, and attachments — against its global threat intelligence database before delivery. For zero-day threats that have never been seen before, Proofpoint's sandbox environment detonates suspicious attachments in isolated UK data centres within 60 seconds, providing verdicts before employees can interact with potentially dangerous content.
Feature
Specification
Detection Rate
99.99% for known threats
Zero-Day Detection
Under 60 seconds via sandboxing
BEC Detection
AI-powered impostor analysis
URL Protection
Real-time click-time URL rewriting
Attachment Analysis
Full sandbox detonation in UK data centres
2. Business Email Compromise (BEC) Protection
BEC attacks cost UK firms hundreds of millions of pounds annually, and they are among the most difficult threats to detect because they typically contain no malware, no malicious links, and no suspicious attachments. Instead, attackers impersonate executives, suppliers, or trusted contacts to trick employees into making fraudulent payments or disclosing sensitive information. Proofpoint addresses this challenge through AI-powered analysis that examines sender behaviour patterns, header anomalies, domain similarity, display name spoofing, and historical communication patterns to identify impostor messages with exceptional accuracy.
Email phishing remains the primary attack vector for UK organisations. The NCSC reports that phishing attacks account for the initial access point in over 80% of UK cyber incidents. Financial services firms are disproportionately targeted, with UK banks and investment firms receiving 3-5x more phishing attempts per employee than cross-sector averages. Deploying enterprise email security is not optional for regulated firms — it is a baseline operational resilience requirement.
The platform's supplier risk module continuously monitors your organisation's vendor ecosystem for signs of account compromise. When a supplier's email account is taken over by an attacker, Proofpoint detects behavioural deviations in the compromised account's sending patterns and flags suspicious invoices or payment redirect requests before they reach accounts payable teams — a capability designed specifically to catch the supplier impersonation attempts that would otherwise result in fraudulent GBP transfers.
BEC Protection Capabilities6
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Executive impersonation detection: AI identifies when attackers pose as C-suite executives using display name spoofing, lookalike domains, or compromised accounts
Domain lookalike blocking: Catches cousin domains, typosquatting variants, and homoglyph attacks targeting your organisation's brand
Supplier invoice fraud prevention: Monitors vendor communication patterns and flags anomalous payment requests or bank detail changes
Payment diversion alerts: Identifies unusual wire transfer requests to UK accounts, particularly those involving urgency language or process bypasses
Account takeover detection: Identifies compromised internal email accounts through behavioural deviation analysis and impossible travel detection
VIP protection profiles: Custom threat monitoring rules for board members, senior managers, and other high-value targets within your organisation
3. NCSC Mail Check and Email Authentication
Proofpoint complements the National Cyber Security Centre's Mail Check service by implementing and enforcing the email authentication standards that Mail Check monitors. Whilst NCSC Mail Check provides independent verification of your domain's DMARC, SPF, and DKIM configuration, Proofpoint actively enforces these policies on inbound mail, rejecting or quarantining messages that fail authentication checks. This dual approach — Proofpoint for enforcement, Mail Check for monitoring — creates a comprehensive email authentication framework aligned with the NCSC's Active Cyber Defence programme.
The platform's DMARC reporting capabilities go beyond simple pass/fail metrics, providing detailed visibility into which sending services are using your domain, which messages are failing authentication, and where unauthorised senders are attempting to spoof your brand. For UK organisations that have not yet reached DMARC enforcement, Proofpoint's guided implementation path helps teams progress from monitoring through quarantine to full rejection without disrupting legitimate email flows.
UK firms should deploy Proofpoint's DMARC capabilities alongside NCSC Mail Check for comprehensive email authentication. Proofpoint enforces the policies at the gateway level whilst Mail Check provides independent monitoring and compliance reporting. Together, these tools satisfy both the technical control and the monitoring evidence that NCSC Cyber Essentials Plus assessors expect to see.
Threat Intelligence Network
Proofpoint Nexus Platform
Proofpoint's competitive advantage stems primarily from the scale and depth of its threat intelligence operation. The Nexus platform processes over 2.8 billion emails daily across its global customer base, along with 500 million URLs and 30 million attachments. This enormous data set enables Proofpoint to identify new attack campaigns, phishing kits, and malware variants within minutes of their first appearance, providing an early warning capability that smaller vendors cannot replicate. The intelligence feeds directly into every Proofpoint deployment, meaning that a threat blocked at one customer's gateway immediately strengthens protection for all other customers worldwide.
Intelligence Metric
Scale
Emails Analysed Daily
2.8 billion+
URLs Analysed Daily
500 million+
Attachments Sandboxed Daily
30 million+
Threat Actors Tracked
100+ groups
UK FS-Specific Threats
Dedicated tracking
UK-Specific Threat Landscape
Proofpoint maintains a dedicated team tracking threat actors that specifically target UK financial services organisations. This includes monitoring for FCA clone firm scams, HMRC impersonation campaigns, and targeted attacks against London-based investment banks and wealth management firms. The UK threat intelligence reports, delivered quarterly, provide actionable insights for board-level risk committees and comply with the reporting standards that FCA supervisors expect regulated firms to maintain. Proofpoint's scale of daily email analysis is designed to surface emerging phishing campaigns targeting UK financial advisers before they appear in public threat feeds.
Threat Category
UK Impact
Proofpoint Response
CEO Fraud / BEC
Significant annual UK losses
AI impostor detection
Invoice Redirection
Growing year-on-year
Supplier monitoring
FCA Clone Firm Scams
Thousands of cloned firms reported
Domain monitoring
Ransomware via Email
Primary delivery vector
Attachment sandboxing
Credential Phishing
Most common initial access method
URL rewriting and analysis
UK NCSC cyber threat assessment: The National Cyber Security Centre identifies email as the most common vector for ransomware delivery, credential theft, and business email compromise targeting UK organisations. Financial services firms face elevated risk due to the high value of successful attacks and the sensitive nature of customer data under UK GDPR. Proofpoint should be deployed as part of a defence-in-depth strategy alongside endpoint protection, network monitoring, and security awareness training.
Independent validation: Proofpoint has been recognised as a Leader in the Gartner Magic Quadrant for Email Security, awarded AAA Rating by SE Labs for threat detection, and named a Leader in the Forrester Wave for Email Security. The platform maintains SOC 2 Type II compliance verified by independent auditors.
Data Loss Prevention Capabilities
Preventing UK Regulatory Data Leakage
Proofpoint's data loss prevention engine inspects every outbound email for sensitive content patterns specific to UK regulatory requirements. The DLP module performs deep content analysis of email bodies, attachments — including images via optical character recognition — and embedded files, matching against predefined and custom data classification policies. For UK financial services firms, this means automatic detection and blocking of National Insurance numbers, sort codes, account numbers, IBAN patterns, and FCA regulatory submission data before they can leave the organisation through email.
DLP Capability
Description
Content Inspection
Deep analysis of email body, attachments, and images
UK PII Detection
National Insurance, passport, driving licence patterns
Financial Data Rules
Sort codes, account numbers, IBAN patterns
FCA Data Classification
Regulatory submission and client data policies
Encryption Enforcement
Automatic TLS or policy-based encryption
The DLP engine supports graduated response actions depending on the severity of the policy violation. Low-risk incidents can trigger a user notification and logging event, whilst high-risk violations — such as bulk PII or client financial data — automatically quarantine the message and alert the compliance team. Custom policies can be configured for specific regulatory requirements, including Senior Managers and Certification Regime documentation and FCA reporting obligations. This flexibility ensures that DLP enforcement is proportionate and does not create unnecessary friction for legitimate business communications.
Security Awareness Training
Proofpoint's integrated security awareness training platform transforms employees from potential vulnerability points into an active defence layer. The training module delivers simulated phishing campaigns using UK-specific lures — including realistic HMRC, Companies House, and FCA impersonation scenarios — to measure and improve employee resilience against social engineering attacks. Risk scoring per user enables IT teams to identify the individuals most likely to click on malicious content and assign targeted remedial training automatically.
UK Regulatory Compliance
UK GDPR (Data Protection Act 2018)
Proofpoint supports UK GDPR compliance through a combination of architectural safeguards and operational controls designed to satisfy ICO expectations. The platform's Data Processing Agreement is aligned with UK GDPR Article 28, and UK data residency options ensure that email processing and quarantine storage remain within UK-based data centres. Data minimisation principles are applied throughout the threat analysis pipeline, meaning Proofpoint processes only the content necessary for security verdicts and does not retain unnecessary personal data.
UK GDPR Compliance Features5
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Data Processing Agreement aligned with UK GDPR Article 28 requirements for processor contracts
UK data residency for email processing, quarantine storage, and threat analysis operations
Data minimisation applied throughout the threat analysis pipeline per Article 5(1)(c)
Breach notification support with real-time incident detection and forensic investigation tools
Right to erasure supported through archive management and data retention controls
FCA Operational Resilience (PS21/3)
The FCA's operational resilience framework requires regulated firms to identify important business services and demonstrate they can continue operating within impact tolerances during severe disruptions. Email is classified as a critical business service for virtually all FCA-regulated firms, making enterprise email security a direct operational resilience requirement. Proofpoint supports PS21/3 compliance by maintaining 99.99% platform availability, providing comprehensive attack simulation capabilities for scenario testing, and delivering the audit logging and incident response documentation that FCA examination teams expect to review.
FCA Requirement
Proofpoint Capability
Important business services
Email protection as critical infrastructure
Impact tolerances
99.99% platform availability
Scenario testing
Attack simulation and phishing exercises
Third-party management
SOC 2 Type II, ISO 27001 documentation
Self-assessment
Comprehensive threat and compliance reporting
Incident management
Real-time alerting and forensic investigation
NCSC Active Cyber Defence and Cyber Essentials Plus
Proofpoint aligns with multiple components of the NCSC Active Cyber Defence programme and contributes directly to Cyber Essentials Plus certification requirements. The platform's email gateway filtering satisfies the boundary firewalls control, DMARC enforcement addresses secure configuration requirements, and attachment sandboxing fulfils the malware protection control. For organisations pursuing or maintaining Cyber Essentials Plus certification, Proofpoint provides documented evidence of control effectiveness that assessors can verify independently.
Email Security in Practice for UK Finance Teams
A 200-person UK financial services firm running Proofpoint's Advanced package — full sandbox, DLP, and encryption, integrated with Microsoft 365 — is a representative deployment profile for the platform's UK target market. Threat detection accuracy, false positive rates, and processing performance matter most in exactly this kind of environment, where quarantining a legitimate client communication or regulatory submission carries real operational and compliance risk.
Threat Detection Capability
Proofpoint's detection engine is designed to catch phishing, malware, BEC/impostor attempts, spam, and data exfiltration attempts across an organisation's email traffic, and its Nexus threat intelligence platform's scale — 2.8 billion emails analysed daily — is independently corroborated by its Leader placement in the Gartner Magic Quadrant for Email Security and its AAA rating from SE Labs, both of which specifically assess detection accuracy across these threat categories.
False Positive Rate
Proofpoint's machine learning models are designed to calibrate to an organisation's specific email patterns and communication behaviours over the first few months of deployment, reducing the false positive rate as the system learns what legitimate traffic looks like for that organisation. A near-zero false positive rate is critical for UK financial services firms, where quarantining legitimate client communications or regulatory submissions could create operational and compliance risk — and independent reviewers consistently rate Proofpoint's false positive rate as one of the lowest among enterprise email security platforms.
Processing Performance and Operational Impact
Proofpoint publishes a 99.99% platform availability target, with sandbox analysis of suspicious attachments designed to complete within roughly 50 seconds so that verdicts are available before employees can interact with potentially dangerous content. As with any enterprise email security rollout integrated with Microsoft 365, organisations should expect an initial tuning period to configure DLP policies and DMARC enforcement levels before the platform reaches steady-state operation.
Pricing Plans
Proofpoint uses enterprise pricing customised for each UK organisation based on user count, feature requirements, and compliance needs. The platform does not publish fixed per-user pricing, but typical UK enterprise deployments fall within established ranges that reflect the depth of protection and intelligence capabilities included.
Package
Users
Includes
Estimated Cost
Essentials
100-500
Email protection, URL defence
Contact sales
Advanced
250-2,000
+ Sandbox, DLP, encryption
Contact sales
Enterprise
500+
+ TAP, TRAP, full suite
Contact sales
UK Financial Services Pricing: Proofpoint offers sector-specific packages for FCA-regulated firms that include compliance reporting, UK threat landscape briefings, and dedicated account management. Typical UK enterprise deployments range from approximately £3-8 per user per month depending on the features selected and contract length. Contact their UK financial services team for a tailored quote with GBP billing and VAT-inclusive invoices.
Total Cost of Ownership (UK Market)
When evaluating Proofpoint's pricing, UK firms should consider the total cost of ownership relative to basic email filtering solutions. The illustrative comparison below, based on typical published pricing and staffing assumptions for a 200-user deployment, shows how a higher licence cost can be offset by lower staff overhead, included compliance documentation, and integrated security awareness training that would otherwise require separate procurement — it is not drawn from a specific customer's actual costs.
Cost Factor
Basic Email Filtering
Proofpoint
Licence Cost (200 users)
£9,600/year
£19,200/year
Staff for Management
1 FTE (£65,000)
0.25 FTE (£16,250)
Incident Response Costs
Average UK breach cost
Risk reduced, not eliminated
Compliance Documentation
Manual (£12,000)
Included
Security Awareness
Separate (£8,000)
Included
Illustrative 3-Year Total Cost
Significantly higher with risk
£106,350
Pros & Cons
Pros
Industry-leading 99.99% email threat detection rate, corroborated by Gartner and SE Labs
NCSC Mail Check and DMARC integration for comprehensive UK email authentication
AI-powered BEC protection catches sophisticated impersonation attacks that rule-based systems miss
Comprehensive DLP prevents UK regulatory data leakage with pattern matching for NI numbers, sort codes, and IBANs
UK GDPR compliant with UK data residency options and ICO-aligned data processing agreements
Threat intelligence from 2.8 billion daily emails provides early warning advantage over smaller vendors
Cons
Enterprise pricing may exceed budgets for UK firms with fewer than 100 employees
Complex configuration requires specialist security knowledge or Proofpoint professional services
Admin console has a steep initial learning curve before teams become proficient
Limited self-service options for mid-market organisations compared to Mimecast and Barracuda
Proofpoint vs Competitors
Choosing the right email security platform for a UK regulated firm requires evaluating detection accuracy, compliance features, integration depth, and total cost of ownership. Proofpoint leads on raw detection rates and threat intelligence scale, whilst Mimecast offers strong mid-market appeal as a UK-headquartered alternative and Microsoft Defender provides a budget-conscious option for smaller organisations already invested in the Microsoft 365 ecosystem.
Feature
Proofpoint
Mimecast
Microsoft Defender
Barracuda
Detection Rate
99.99%
99.9%
99.5%
99.7%
BEC Protection
AI-powered
Rule-based
AI-powered
Basic
UK Data Residency
Yes
Yes (UK HQ)
Yes
Limited
NCSC Alignment
Strong
Strong
Good
Basic
DLP
Advanced
Good
Good
Basic
Sandbox
Full
Full
Limited
Limited
UK FS Customers
Major banks
Major banks
Widespread
SMBs
Best For
Enterprise FS
UK mid-market
M365 shops
SMB
When to Choose Each Platform
Choose Proofpoint if you are a mid-to-large UK enterprise with 200 or more users, email-borne threats are your primary risk vector, and you need comprehensive FCA and NCSC compliance evidence. Proofpoint is the strongest choice for organisations where BEC and executive impersonation represent significant financial risk and where best-in-class threat intelligence justifies the premium investment.
Choose Mimecast if you prefer a UK-headquartered vendor with strong mid-market presence and need email security, archiving, and continuity bundled in a single platform. Mimecast's London headquarters and UK-centric support model appeal to organisations that prioritise supplier proximity.
Choose Microsoft Defender if you are a smaller Microsoft 365-native organisation, your budget is constrained, and you need good-enough protection without a separate vendor relationship. Defender integrates natively but lacks the depth of dedicated email security platforms for high-risk environments.
Who Should Use Proofpoint?
Ideal Users
Best-Fit Organisations5
Show detailsHide details
FCA-regulated banks and investment firms with 200 or more employees requiring enterprise email security with comprehensive compliance evidence
FTSE-listed companies handling sensitive shareholder communications and board-level correspondence that represent high-value targets
Insurance companies protecting policyholder data, claims communications, and underwriting workflows against email-borne compromise
Professional services firms in law, accounting, and consulting handling confidential client data across multiple practice areas
Government agencies and NHS trusts requiring NCSC-aligned email protection with UK data residency guarantees
Not Ideal For
Small UK firms under 100 employees where enterprise pricing may be disproportionate to the risk profile
Organisations with minimal email-based threat exposure that do not handle sensitive financial or personal data
Teams without dedicated IT security staff who would struggle with the initial configuration complexity
Our Verdict
Proofpoint Email Security earns 4.5 out of 5 stars as the leading enterprise email protection platform for UK regulated organisations.
Bottom line: Proofpoint delivers the most comprehensive email security available for UK financial services firms. Its unmatched 99.99% threat detection rate, AI-powered BEC protection, NCSC Mail Check alignment, FCA compliance documentation, and UK data residency options make it the premier choice for regulated enterprises where email security is a mission-critical business service. The investment is justified by the scale and sophistication of the threats it prevents, and the total cost of ownership analysis demonstrates clear value when accounting for reduced staffing overhead, included compliance tooling, and breach cost avoidance.
Final Rating: 4.5/5
Our Rating
Expert Score
4.5/5
Choose Proofpoint if:
Email security is a mission-critical business service for your UK organisation
You need comprehensive FCA, PRA, and NCSC compliance alignment and evidence
You face sophisticated BEC, phishing, and impersonation threats targeting senior staff
You have 200 or more users with dedicated IT security staff for platform management
Consider alternatives if:
You have fewer than 100 users and need simpler, self-service email protection
Budget constraints are a primary consideration and good-enough detection is acceptable
You are a Microsoft 365-native organisation that prefers vendor consolidation over best-of-breed
Get a Proofpoint Proof of Concept for Your UK Organisation
See why FTSE-100 companies trust Proofpoint. Request a 30-day evaluation tailored to your UK team's compliance requirements and threat landscape.
Why do UK financial services firms choose Proofpoint over Microsoft Defender?
While Microsoft Defender for Office 365 provides adequate baseline email protection included with Microsoft 365 licences, Proofpoint processes 2.8 billion messages daily across a broader threat intelligence network, providing superior detection of novel phishing, BEC (Business Email Compromise), and supplier fraud attacks. For FCA-regulated firms where a single successful BEC attack can result in regulatory action and significant client financial harm, the incremental investment in Proofpoint's specialised threat intelligence typically justifies itself rapidly.
Is Proofpoint aligned with NCSC UK guidance?
Yes. Proofpoint directly addresses NCSC guidance on email security, including recommendations for anti-spoofing controls (SPF, DKIM, DMARC), sandboxing of suspicious attachments, and URL rewriting to neutralise malicious links. Proofpoint's Email Authentication module provides turnkey DMARC enforcement — one of the most impactful email security controls recommended in the NCSC's Cyber Security Design Principles.
What is Business Email Compromise (BEC) and how does Proofpoint protect against it?
Business Email Compromise is a sophisticated attack where criminals impersonate senior executives (CEO, CFO), suppliers, or clients to trick employees into authorising fraudulent payments or sharing sensitive data. Unlike malware-based attacks, BEC emails often contain no malicious links or attachments, making them difficult for traditional email filters to detect. Proofpoint's BEC protection uses machine learning to analyse sender behaviour patterns, relationship history, and email metadata to detect impersonation attempts even when attackers use convincingly spoofed email addresses.
How long does Proofpoint take to deploy?
Proofpoint can be deployed within 1-2 weeks for a standard mid-market UK firm, with full enterprise deployments (including DLP integration, email encryption, and security awareness training) typically completed in 4-6 weeks. The cloud-based architecture eliminates the need for on-premises hardware. Proofpoint's UK financial services team provides dedicated implementation support, and the 30-day proof of concept allows firms to validate efficacy before full commitment.
Does Proofpoint support the FCA's PS21/3 operational resilience requirements?
Yes. Proofpoint helps FCA-regulated firms meet PS21/3 operational resilience obligations by protecting email — typically a critical business service — from disruption caused by cyberattacks. The platform's 99.9%+ availability SLA, comprehensive audit logging, and incident response integrations support firms' ability to demonstrate email service resilience, recover from incidents within defined tolerances, and produce the audit evidence required by FCA supervisory reviews.