Email Security Services for UK Businesses
Mimecast email security implementation to protect your business from phishing, ransomware, and business email compromise. We configure threat detection, email continuity, compliance archiving, and security awareness training — your complete email security layer.
Email security services for UK businesses, built on Mimecast and layered over Microsoft 365. We stop phishing, ransomware and business email compromise before messages reach inboxes, add continuity so email keeps flowing during outages, and configure tamper-proof archiving for compliance — plus ongoing phishing simulation to keep your team alert.
Request your free email security (mimecast) consultation
Tell us about your requirements and a certified engineer will call you back within 10 minutes. No obligation, no pressure.
What this service delivers for your business
Our Email Security service with Mimecast protects your business from phishing, ransomware, and business email compromise — the #1 attack vector for UK businesses. We configure threat detection, email continuity, compliance archiving, and security awareness training to create a complete email security layer that blocks 99.9% of malicious email before it reaches your users.
Email is the front door to your business — and it's where 91% of cyber attacks begin. Phishing, ransomware, impersonation, and business email compromise attacks are increasingly sophisticated, and native email security (Office 365 ATP) catches many but not all of them. Mimecast adds the layers that native security misses: advanced threat detection, email continuity during outages, and compliance archiving.
We don't just install Mimecast and walk away. We configure impersonation protection rules tailored to your business, set up continuity so your email keeps working even if Microsoft 365 goes down, implement compliance archiving for regulatory requirements, and run ongoing security awareness training with phishing simulations to keep your team vigilant.
Is this the right service for your business?
We work with businesses across the UK in a range of situations. See if any of these sound like yours.
Businesses targeted by phishing
Companies experiencing phishing attacks, impersonation attempts, or business email compromise — and needing stronger protection than native email security provides.
Regulated businesses with archiving requirements
Organisations required to retain email for compliance (FCA, GDPR, legal hold) who need tamper-proof, searchable email archiving.
Businesses that can't afford email downtime
Companies for whom email is mission-critical and who need continuity — email that keeps working even if their email provider has an outage.
Leadership teams at impersonation risk
Businesses whose executives or finance teams are targets for impersonation attacks and wire transfer fraud.
What sets our approach apart
We're not just another IT provider. Here's what makes our email security mimecast service different — and why businesses across the UK trust us with their critical technology.
99.9% of malicious email blocked
Mimecast's multi-layered threat detection blocks 99.9% of malicious email — phishing, ransomware, and impersonation — before it ever reaches your users' inboxes.
Email continuity during outages
If Microsoft 365 goes down, Mimecast keeps your email flowing — users can continue sending and receiving email through the Mimecast web console or mobile app.
10-year compliance archive
We configure tamper-proof, searchable email archiving that meets FCA, GDPR, and legal hold requirements — with rapid e-discovery when you need it.
Security awareness training included
We run ongoing phishing simulations and security awareness training to keep your team vigilant — because even the best technical controls can be defeated by a well-crafted email.
Real situations we solve every day
These are the scenarios UK businesses bring to us most often. If any of these sound familiar, we can help.
Phishing and ransomware protection
Your business is receiving phishing emails that Office 365's native security doesn't catch. You need a stronger layer that blocks them before they reach users.
Executive impersonation protection
Attackers are impersonating your CEO or finance director to trick staff into making payments. You need impersonation protection rules tailored to your business.
FCA or regulatory email archiving
You're required to retain all email for compliance — tamper-proof, searchable, and quickly retrievable for e-discovery and regulatory audits.
Email continuity planning
Your business can't function without email, and you need a continuity solution that keeps email flowing even if Microsoft 365 experiences an outage.
Every system. Every time. No exceptions.
When you engage Third Eye Technologies for email security (mimecast), here's exactly what you get — zero surprises, zero upsells.
Third Eye Technologies vs generic IT support
Not all IT providers are built the same. Here's exactly what sets our email security (mimecast) apart from the typical break-fix or generic support model — so you can decide with confidence.
| Feature | Third Eye Technologies Certified IT Consultancy | Generic IT Support Typical break-fix provider |
|---|---|---|
| Response time | < 60 min SLA (avg 10 min) | 4–24 hours, best effort |
| Monitoring approach | 24/7 proactive — we fix before you notice | Reactive — call us when it breaks |
| Pricing model | Fixed monthly, no surprise fees | Hourly billing, unpredictable costs |
| Engineer expertise | Microsoft & vendor-certified specialists | Generalist, varies by callout |
| Strategic advisory | Quarterly roadmap & business alignment | None — fix the problem and leave |
| SLA backing | Written guarantee in your contract | Verbal promise, best effort |
| Documentation | Full audit trail, runbooks & reporting | Minimal or none |
| Contract terms | 30-day flexible cancellation | 12–36 month lock-in |
| Account management | Dedicated account manager who knows your business | Whoever answers the phone |
< 60 min SLA (avg 10 min)
4–24 hours, best effort
24/7 proactive — we fix before you notice
Reactive — call us when it breaks
Fixed monthly, no surprise fees
Hourly billing, unpredictable costs
Microsoft & vendor-certified specialists
Generalist, varies by callout
Quarterly roadmap & business alignment
None — fix the problem and leave
Written guarantee in your contract
Verbal promise, best effort
Full audit trail, runbooks & reporting
Minimal or none
30-day flexible cancellation
12–36 month lock-in
Dedicated account manager who knows your business
Whoever answers the phone
Comparison reflects our standard managed service model. Individual engagements are tailored to your specific requirements — request a free consultation for a tailored comparison.
Find the right plan for your business
Toggle between our three IT support tiers to see exactly what's included in each plan.
Professional
Full managed support for growing businesses
Support & Monitoring
Security
Cloud & Infrastructure
Strategic Services
Account Management
What to expect when you engage us.
Discover
We conduct a deep-dive assessment of your IT estate, business processes, and growth objectives to understand where technology can drive real value.
Advise
We deliver a clear, prioritised IT roadmap with actionable recommendations — aligned to your budget, risk appetite, and strategic goals.
Design
We architect robust, scalable solutions — from cloud and security frameworks to automation workflows — engineered for your specific operating model.
Deliver
We implement, train your team, and provide ongoing strategic review to ensure your technology continues to deliver measurable business outcomes.
UK businesses trust us. Here's why.
"Third Eye Tech's strategic assessment gave us a clear cloud roadmap. Their advisory saved us from a costly wrong turn, and the migration was flawless. Genuinely transformative."
"Their cybersecurity strategy review uncovered gaps we didn't know we had. The roadmap they delivered gave our board confidence, and their ongoing advisory keeps us ahead of threats."
"Their process automation consulting identified £200k of annual savings we'd missed. The ROI was visible within the first month. Excellent strategic partner."
"IT consultancy that actually speaks our language. Their strategic advice has shaped our entire technology roadmap, and they explain everything in plain English. Highly recommend."
Real Email Security (Mimecast) engagements, real outcomes.
See how we've delivered email security (mimecast) for businesses across London and the UK — with measurable results and zero-downtime execution.
UK-wide coverage
Configured and monitored UK-wide from our London base. Deployment and administration are remote as standard, with on-site security reviews available nationwide.
Credentials you can verify
- Mimecast configuration specialists
- Microsoft Certified engineers
- Cyber Essentials Plus certified
- Fully insured and DBS-checked engineers
What UK clients combine with this service
Most engagements start here and grow — these are the services buyers most often need alongside it.
Related tech insights
Expert guides and analysis on email security (mimecast) for UK businesses.
Tech Insights
Ransomware Protection: A Complete Defence Strategy for UK Businesses
Ransomware attacks cost UK businesses £1.2 billion in 2025. Here's the seven-layer defence strategy we deploy for clients — from immutable backups to employee training — that stops attacks before they encrypt.
Active Directory Security: A Hardening Guide for UK IT Admins
Active Directory is the keys to your kingdom — and the #1 target for attackers. Here are the 12 security controls every UK business should implement to protect their identity infrastructure.
IT Budget Planning: A Complete Guide for UK SMEs in 2026
How to plan, forecast, and optimise your IT budget for 2026 — with real cost benchmarks for managed support, cloud infrastructure, cybersecurity, and Microsoft 365 licensing for UK small businesses.
Other services you might need
Managed IT Support & Services
Managed IT support with 24/7 monitoring, proactive maintenance, and certified engineers — keeping your business running under one SLA.
Cloud Services & Support
Cloud services and support — architecture design, migration, and ongoing management of Azure, AWS, and hybrid cloud infrastructure.
Cyber Security Services
Managed cyber security services protecting UK businesses from evolving threats — risk assessments, defence-in-depth, compliance, and 24/7 monitoring.
Email Security (Mimecast) — your questions answered
Common consulting questions about pricing, timelines, and what's included.
Sources & further reading
Independent guidance from UK regulators, standards bodies and technology vendors that underpins the advice on this page.
- National Cyber Security CentrePhishing: how to spot and report scamsHow to recognise, report and harden against email-borne attacks.(opens in a new tab)
- MimecastEmail security and resiliencePlatform documentation for the email security service we deploy.(opens in a new tab)
- MicrosoftSecurity threat intelligence and researchVendor threat research and product security guidance.(opens in a new tab)
- National Cyber Security Centre10 Steps to Cyber SecurityThe UK's baseline framework for protecting business systems, people and data.(opens in a new tab)
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