Free Tool · Email Security
Can Someone Send Email as Your Business?
Type your domain and find out in seconds whether a stranger could send email in your company’s name — and exactly what is missing if they could.
Every domain can publish a short set of instructions telling the world’s mail servers which computers are allowed to send email for it, and what to do with anything else. Most small businesses have never published them. Many more published them years ago and never switched them on, which looks identical from the outside and protects nothing.
Until those instructions are in place and turned up, anybody can put your business’s name in the From line of an invoice and it will arrive looking exactly as though you sent it.
The checker is just below
At a glance
Check the email now
Paste the delivery record from the email and this checker reads it the way a security analyst would, then tells you in plain English whether the sender really is who they claim to be — and which of the usual tricks are present.
That is how most invoice fraud actually happens, and it is why a pass here is never permission to pay. Before you pay an invoice, change any bank details, or send anything confidential, ring the person on a number you already had — not one from the email.
Not the message itself — the hidden delivery record behind it. It usually starts Delivered-To:, Received: or Authentication-Results:. Copy the whole thing; half of it is worse than none.
Where do I find these?
Outlook (Windows desktop). Double-click the email so it opens in its own window, then File → Properties. The headers are in the Internet headers box at the bottom. Click inside it, press Ctrl+A then Ctrl+C. Step by step, with screenshots.
New Outlook and Outlook on the web. Open the email, click the three dots at the top right of the message, then View → View message details. Step by step, with screenshots.
Outlook on a Mac. There is a guide for that.
Gmail. Open the email, click the three dots beside the reply arrow, then Show original. A new tab opens — use the Copy to clipboard button on it.
Apple Mail. View → Message → All Headers, or Raw Source. Select it all and copy.
On a phone. Most phone mail apps will not show you the headers at all. Wait until you are at a computer — and do not tap anything in the email in the meantime.
Not sure what it is telling you?
If this is an invoice, a payment request or a change of bank details, do not act on it until somebody has looked properly. Send me what the checker said and I will tell you what I see.
What this can and cannot tell you. It reads the verdicts your own mail provider stamped on the message when it arrived, and the addresses hidden behind the one you were shown. It is not re-running those checks and it cannot — if the headers were forwarded, shortened or edited, it is reading whatever it was given. A pass proves where a message came from, never that it is true. A fail is a strong signal, not a certainty: a badly configured forwarder or mailing list can fail these checks with nothing sinister behind it.
No responsibility accepted. This checker is provided free of charge, as is, for general information only. It is not advice on your particular situation, it is not a security audit, and it is not a substitute for judgement. No guarantee is given that what it reports is accurate, complete or current. Systems Secure Ltd accepts no responsibility or liability for any loss, damage, cost or expense arising from its use — including anything it reports, anything it misses, and any decision taken on the strength of it. What you do about an email remains your decision and your responsibility. Use of this tool is subject to our terms and conditions.
If you think you have already paid a fraudulent invoice or handed over a password, ring your bank first, then report it to Action Fraud on 0300 123 2040. Speed matters more than anything else at that point.
Who wrote this
James Batt
CISSP CEH Founder, Systems Secure
Twenty-five years as an IT architect in the oil and gas industry, designing multi-million pound systems for companies around the world, before going independent. These days the work is smaller and a good deal more useful: helping UK businesses get enterprise-grade security without an enterprise budget.
I built this checker because most business owners have no idea this is even a setting, let alone that theirs is switched off. It is invisible until somebody uses it against you, and by then the damage is done to a customer rather than to you — which is what makes it so easy to keep ignoring.
If it found something and you would rather not go poking about in your own DNS, pick up the phone — or get in touch whichever way suits you. It is usually an hour’s work and it does not need doing twice.
No obligation · No sales script · You keep the findings either way
Questions you're probably asking
Can someone really send email that looks like it came from us?
Yes, and it is easier than most people expect. The name in the From line of an email is not verified by anything unless you tell the world to verify it. Anyone with a mail server, or a few pounds and an online sending service, can put your company's address there.
The records this checker looks at are the only thing standing in the way. They tell every receiving mail server which computers are allowed to send email for you, and what to do with anything else. Without them, the answer is simply "deliver it".
The checker says we have DMARC but it is not doing anything. What does that mean?
It means your policy is set to "p=none" — the setting that watches and reports but takes no action. Forgeries are counted, and then delivered anyway.
This is the most common result we see, and it is not carelessness. None is where you are supposed to start, so you can find out who sends email in your name before you start blocking anything. The mistake is stopping there. Most domains are set to none during setup and are still sitting there years later, protecting nothing while looking, on paper, as though the job was done.
Is it safe to change these settings? Will it stop our own email working?
Handled carelessly, yes it can — and you deserve a straight answer about that rather than a reassuring one. If you jump straight to "reject" before you know every system that sends email in your name, the ones you forgot will stop arriving. That usually means invoices from your accounting software, booking confirmations, your newsletter, anything your CRM sends on your behalf.
The safe route is the reason "none" exists in the first place: turn on reporting, read a few weeks of it, fix what turns up, then tighten in stages. It takes a little patience rather than a little luck.
We use Microsoft 365 or Google Workspace. Is this not already handled?
No, and this is the most common misunderstanding of the lot. Microsoft and Google will send and receive your email perfectly happily without any of this being set correctly.
SPF usually gets added during setup, because email breaks without it. DKIM often has to be switched on deliberately and frequently never is. DMARC is almost never configured by default at all. Your provider secures its own systems. Telling the world what to do with mail claiming to be you is your job, on your own domain.
It says it could not find a signing key, but I am sure we have DKIM.
Quite possibly you do. A signing key can be published under any name the person who set up your mail chose, and this checker can only look under the sixteen most common ones.
Finding nothing there is genuinely inconclusive, which is why it is shown as a note rather than a warning. If you know your selector name you can confirm it in your DNS in a moment, or ask whoever runs your mail.
How long does fixing this take, and can we do it ourselves?
The changes themselves are a handful of text entries in your domain's DNS settings and take minutes to type. The work is not the typing. It is knowing what to put, in what order, and how fast to tighten — which systems send email in your name, whether your SPF record is already close to the limit it is allowed, and what the reports are telling you.
If you have someone who manages your DNS confidently, they can do this. If the phrase "your domain's DNS settings" made you uneasy, that is a fair sign it is worth handing over.
If we fix all this, is our email secure?
It means nobody can forge your domain from the outside, which is a real and permanent win. It does not mean your email is secure.
The most common serious attack on a small business is not a forged domain at all. It is a real mailbox that somebody has got into, sending real email from the real account. Every check on this page would pass, because nothing is being faked. That is a different problem with different defences: strong sign-in, multi-factor authentication, and people who know to confirm any change of bank details by phone.
If you want to check a particular message that has arrived, that is what the Email Header Checker is for.
Who checks that your security actually works?
Your IT team keeps the business running. We check it is protected — finding the risks, telling your IT team what to fix, and showing you the proof every month in plain English.
Per computer, sole trader. Excludes VAT.
- Round-the-clock monitoring of every computer
- Updates, ransomware protection, web filtering
- Training so your people spot the scams
Three packages, sized by how many people you have — £35, £204 and £710 a month. Every price is on this page.
Systems Secure Ltd is an independent cyber security company based in Copthorne, West Sussex, run by James Batt and working with businesses across the UK. Its managed service, QuantumCare, works alongside your existing IT support rather than replacing it — finding the risks, telling your IT team what to fix, and checking that important protections are still working.
This is cyber security, not IT support. Prices are published on this site, starting at £35 a month. Cyber security should give you clear answers — not long reports, confusing alerts or guesswork.
Keep your IT support. Add dedicated cyber security.
There's a reason a company's accounts are prepared by one firm and audited by another. It isn't that accountants can't be trusted — it's that nobody, however good, is well placed to check their own work.
Keeps your systems, users and everyday technology running. In-house or outsourced, they stay involved throughout — and receive clear, specific actions from us whenever their help is needed.
Finds the cyber risks, strengthens protection, and checks that important security controls are still working. You get an independent view of what's protected, what has changed, and what should happen next.
- We're not here to replace anyone or catch anyone out
- Clear responsibilities for everyone involved
- Independent checks on important protection
- Clear proof for you every month
Good IT teams tend to welcome this. An independent report is often the evidence they've been trying to get budget on for months.
Most security companies won't show you a price until you've sat through a sales call. Here's ours.
Sole Trader
One person, one computer
From £35
per computer, per month
- Round-the-clock monitoring of your computer
- Updates kept on top of automatically
- Protection against viruses and ransomware
- Dangerous websites blocked before they load
- Yearly training so you spot the scams
- Ask us a question any time
Micro Business
Priced per Microsoft 365 or Google account
From £204
per month
- Round-the-clock monitoring of every computer
- Your files backed up to the cloud
- An alert the moment a login is stolen
- Regular checks for weak spots
- Ongoing training, not just once a year
- A plain-English summary every month
Business Pro
Priced per Microsoft 365 or Google account
From £710
per month
- Everything in Micro Business
- Your network and firewall checked
- Tested from the outside, the way an attacker would
- Security policies written for you
- Cyber Essentials readiness support
- A review with James every quarter
No setup fees. No minimum contract. No penalty for changing your mind. All prices exclude VAT. Compare all packages side by side
Need security ownership at board level?
QuantumCare CISO is the mirror image of the packages above — all people, no software. A qualified security officer for a business of 10 to 250 people, from £1,200 a month. Five published prices, and no quote to ask for.
See CISO pricesNot ready for a monthly plan?
One-off work with James at a fixed price agreed before anything starts. £450 to review one system — your Microsoft 365, your firewall, your backups. £795 for the whole business. Got a question first? There's no charge for finding out whether you need us.
See consulting pricesFour steps from the price on this page to being protected
No form to fill in first, and no sales call needed to find out the number.
Pick your package
Three QuantumCare packages, sized by how many people you have, from £35 a month. Every price is published on this site.
Thirty minutes with James
A conversation, not a pitch. We confirm which package fits — and if the honest answer is that you don't need us, we'll say so.
Setup
We install it, configure it and check it is working — usually inside a week from agreement, and mostly without you noticing.
Every month after
Monitoring, updates applied in the background, and problems dealt with rather than just flagged up. Micro Business and Business Pro add a plain-English summary each month.
What you can hold us to
No lock-in
Month to month on 30 days' notice, no setup fee and no penalty for changing your mind. A 12-month option is there if you'd rather freeze your price — a choice, not a requirement.
A three-month refund
If your business is compromised while you're following the agreed security plan, you get three months' fees back. No security company can promise you'll never be attacked, and we don't.
Only 20 clients
The managed security list is capped at 20, so the person checking your security is actually paying attention — and you deal with the same person every time.
Never your competitor
We will not take on a direct competitor of an existing client, and every price on this site is the price you pay.
The proof is in the numbers, the awards and the qualifications
In IT, networks and cyber security since 1995
Systems Secure trading, full time on cyber security since 2016
Defences strengthened, risk reduced, peace of mind delivered
Trained to spot threats, stop breaches and protect businesses
The gold standard in cyber security, recognised worldwide.
Certified to run a security programme — governance, risk and reporting to a board.
Qualified to think like a hacker and find your weaknesses first.
Certified in structured cyber risk management using the NIST framework.
Globally recognised qualification in cyber security best practice.
Hi, I'm James Batt
- CISSP, C|CISO, CEH, NCSP Practitioner, Security+
- 21 years designing multi-million-dollar IT systems in oil and gas
- 16 years running Systems Secure, based in Copthorne, West Sussex
Most cyber security experts talk in acronyms. I talk like a business owner — because I am one.
I went into the oil and gas industry in 1995, doing IT, networks and security for global corporations, and led multi-million-dollar projects across America and Europe. Twenty-one years of it — and security was part of the job from the first day. I'm not an IT man who retrained into it later.
In 2010 I started Systems Secure as a sideline and ran it alongside the day job for six years. By 2016 it had outgrown the evenings and weekends, so I sat the Certified Ethical Hacker exam, left a good salary and better benefits behind, and turned the company from IT to cyber security — because security was, and still is, the weakness most smaller businesses have.
Sixteen years on, I've helped 200+ UK organisations strengthen their defences, pass compliance audits, and sleep easier knowing their data — and their reputation — are protected. You deal with me, not a rotating support desk.
Cybersecurity Essentials for Business Owners
Written for the person who owns the business, not the person who runs the servers. No acronyms, no scare stories, and nothing you need a technical background to act on.
- How attacks on businesses your size actually start — which is rarely the way people expect
- The handful of protections worth putting in place before anything else
- How to tell whether what you already have is genuinely working
We'll email you the PDF. The button opens a short form — one name, one email address.
Send me the guide In a hurry? The ten-point checklist is on the site already, with nothing to fill in.Questions you're probably asking
The main ones that come up on almost every call, answered here so you don't have to book one to find out.
How much does cyber security cost for a small business in the UK?
Systems Secure managed cyber security starts at £35 per computer per month for a sole trader, £204 per month for a business of one to nine people, and £710 per month for a business of ten or more. All prices exclude VAT and there are no setup fees.
What you pay depends on how many people you have. The Sole Trader package is priced per computer. Micro Business and Business Pro are priced per Microsoft 365 or Google account, so the cost scales with your team rather than a fixed licence block. Every price is published on the website — you don't need to sit through a sales call to find out the number.
What is QuantumCare?
QuantumCare is Systems Secure's cyber security service: three managed packages priced by how many people you have — Sole Trader from £35 a month, Micro Business from £204 and Business Pro from £710 — plus QuantumCare CISO, a separate service from £1,200 a month for businesses of 10 to 250 that need a qualified security officer rather than more software.
It is cyber security, not IT support — it works alongside whoever runs your systems rather than replacing them, finding the risks, telling your IT team what to fix, and checking that important protections are still working.
Do I have to sign a long contract?
No. Every Systems Secure package runs on a rolling monthly basis with 30 days' notice and no cancellation penalty. There is no minimum term.
A 12-month option is available if you'd rather freeze your price, which saves £2 per account per month. It's a choice, not a requirement.
Is there a setup fee?
No. There are no setup fees and nothing to pay upfront on any Systems Secure package. You pay monthly, starting from the month the service begins.
Do your prices include VAT?
No. All Systems Secure prices are quoted excluding VAT. VAT is added to your invoice at the prevailing UK rate.
Can I get a one-off piece of work instead of a monthly plan?
Yes. Fixed-price consulting is available with no ongoing commitment: £150 for a single question answered in writing within two working days, £250 for a second opinion, £450 for a review of one system, and £795 for a full review of your business. All prices exclude VAT.
These prices are built for businesses of up to 25 staff. Above that, the price rises with headcount.
Working with your IT team
Do I have to get rid of my existing IT provider?
No. Systems Secure is designed to work alongside your existing IT support, not replace it. Whether your IT is outsourced or in-house, they carry on running your systems, users and everyday technology, and receive clear, specific actions from us whenever their help is needed.
The two roles are different jobs. Your IT team keeps the business running; Systems Secure checks that it's actually protected. You get an independent view of what's protected, what has changed and what should happen next — without disrupting a relationship that's already working.
We have our own IT manager. Do we still need an outside security firm?
Usually yes — and it tends to help them rather than undermine them. An in-house IT manager is responsible for keeping everything running, which means security competes with a hundred other urgent things every week. It also means they would be reporting on the quality of their own work, which isn't a fair position to put anyone in.
Systems Secure gives your IT manager a specialist to escalate to and a second pair of eyes on the things that matter, and gives you a view that doesn't depend on one person's workload or judgement.
What is the difference between IT support and cyber security?
IT support keeps your technology working: fixing problems, setting up new starters, keeping systems online. Cyber security is a separate job — finding weaknesses before an attacker does, strengthening protection, and checking that important controls are still working months after they were switched on.
Good IT teams, in-house or outsourced, do handle parts of security — including updates, backups and access control. What they rarely provide is independent oversight: someone whose only job is to look for the gaps, and who has no reason to report that everything is fine.
My IT company says they already handle security. Do I need you as well?
Possibly not — and Systems Secure will tell you honestly if that's the case. But two things are worth knowing: nobody is well placed to audit their own work, and IT providers are themselves a target for attackers looking for a route into their customers' networks.
In a joint advisory, the UK's National Cyber Security Centre — alongside CISA, the NSA, the FBI and their Australian, Canadian and New Zealand counterparts — warned that managed service providers are granted privileged access to a customer's network, which can create opportunities for attackers.
That isn't hypothetical. In July 2021 attackers exploited a flaw in Kaseya VSA, remote management software used by IT providers, and reached an estimated 800 to 1,500 businesses through around 60 providers. None of those businesses did anything wrong. They were reached through a supplier they trusted.
So the question worth asking isn't "do you handle security?" It's "when did you last check that it's working, and can I see the evidence?"
Risk and threats
Is my business too small to be a cyber target?
No. In the last 12 months, 46% of UK small businesses and 42% of micro businesses identified a cyber security breach or attack, according to the Government's Cyber Security Breaches Survey 2025/26.
Most attacks aren't personally chosen — they're automated. Software scans the internet looking for weaknesses and takes whatever it finds. A business with three staff and a website nobody visits still gets probed daily. Phishing remains by far the most common method, experienced by 38% of businesses.
Isn't antivirus enough?
No. Antivirus catches known threats, but most modern attacks don't rely on a recognisable file. Phishing, stolen passwords and misconfigured settings all bypass antivirus entirely.
Proper protection needs several layers: monitoring that spots unusual behaviour, multi-factor authentication, patching, backups you've actually tested, and staff who can recognise a convincing fake email.
Isn't cyber insurance enough on its own?
No. Most cyber insurance policies require you to prove you took reasonable precautions — multi-factor authentication, staff training, patch management. If you can't demonstrate those, a claim can be reduced or refused entirely.
Insurers increasingly expect standards such as Cyber Essentials before they'll offer cover or renew it. Insurance is worth having, but it pays out after the damage. It doesn't prevent it.
What happens if we get attacked anyway?
No security company can promise you'll never be attacked, and Systems Secure doesn't make that promise. What it does offer is a three-month refund guarantee: if your business is compromised while you're following the agreed security plan, you get three months' fees back.
The realistic goal is fewer incidents, caught earlier and contained faster.
The service
What do I actually get each month?
Every package includes round-the-clock monitoring, automatic updates, protection against viruses and ransomware, blocking of dangerous websites, and staff training. Larger packages add cloud backup, alerts when a login is stolen, regular checks for weak spots, firewall and network reviews, written security policies and a quarterly review.
Micro Business and Business Pro also include a short monthly summary showing what's protected, what changed and what needs attention — written in plain English rather than as a long technical report.
What size businesses do you work with?
From sole traders up to businesses of around 250 staff. There are three packages: Sole Trader for one person, Micro Business for one to nine people, and Business Pro for ten to 250. Business Pro has a minimum of ten accounts.
Do you only work with businesses in West Sussex?
No. Systems Secure is based in Copthorne, West Sussex, and works with businesses across the UK. Almost all of the work is done remotely, so your location doesn't affect the service or the price.
On-site visits are available and charged separately: £240 for a visit of up to two hours, £400 for a half day and £760 for a full day.
Can you help us get Cyber Essentials?
Yes. Cyber Essentials readiness support is included in the Business Pro package. That means reviewing your current setup against the requirements, telling you what needs to change, and getting you to the point where you can pass.
Worth knowing: Cyber Essentials reflects the day of assessment, not a permanent state. Ongoing patching, access reviews and vulnerability checks are what keep the certificate meaningful between renewals.
Who you're dealing with
Who will I actually be dealing with?
James Batt. Systems Secure deliberately caps its managed security client list at 20, so you deal with the same person every time rather than a rotating support desk.
Systems Secure will also never take on a direct competitor of an existing client.
What qualifications does James Batt hold?
James Batt holds CISSP, C|CISO (Certified Chief Information Security Officer), CEH (Certified Ethical Hacker), NCSP Practitioner and CompTIA Security+.
Behind those: 21 years designing multi-million-dollar IT systems for the oil and gas industry, and 16 years running Systems Secure. The company was named Cybersecurity Company of the Year at the West Sussex Business Awards 2025, and Security Solution Specialists of the Year at the E2 Media Awards 2025.
Why do you only take on 20 clients?
Because security oversight is only worth paying for if someone is genuinely paying attention. Capping the list at 20 clients means each one gets real scrutiny rather than an automated dashboard nobody reads.
It also means Systems Secure can be honest about capacity rather than selling a service it can't properly deliver.
Thirty minutes, free, and nothing to decide on the call
A conversation, not a pitch. We'll confirm which package fits — and if the honest answer is that you don't need us, we'll say so.
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Systems Secure® Limited·Registered in England and Wales, company no. 07295869 6 The Meadow, Copthorne, West Sussex RH10 3RG·07702 896 910·[email protected]
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