Business Email Security

Email security is two jobs. Most companies only buy one

One job is blocking what arrives. The other is making sure your own domain cannot be turned against your customers. Most filters cover the first and ignore the second. CloudSource runs both from one console.

SOC2, HIPAA, PCI and NIST compliant datacenter

Security assessment
58 /100 Moderate risk
Inbound FilteringStrong
Domain AuthenticationAt risk
Account AccessNeeds work
Data Loss PreventionAt risk
Compliance RecordsNeeds work
Vendor VerificationNeeds work
Blocked$350,000Wire fraud attempt, caught before it landed
PhishingDown sharplyReaching staff, after the switch
CutoverZero downtimeThe switch happens without a mail outage
The blind spot

Most filters only read half the mail that matters

A filter that only reads inbound mail cannot see a single line of what leaves under your domain name. That is the gap most companies carry for months before it gets used against them.

How the gap forms
What you have already put in place
A spam filter
Your email provider
Antivirus
Employee training
An IT provider
Your domain Gaps between them Protected by CloudSource
Where the gap usually turns up After the assessment
Your domain gets used to impersonate you to your own customers.ExposedCovered
A compromised account sends on your behalf, undetected.ExposedCovered
Sensitive files leave in an attachment nobody reviewed.ExposedCovered
There is no record when someone asks what happened.ExposedCovered

Want to know what is reaching your inboxes right now, and what is leaving them?

The problems we solve

Three gaps, and what each one actually costs a company

These are the three we find most often. What each one costs when it goes unfixed. What closing it looks like in practice.

Gap 01 ExposedClosed

Outbound Impersonation

Cost to your company

Your own domain gets used to send fraudulent email to your customers. Nobody watching outbound mail means nobody catches it.

What closing it looks like

Outbound authentication running from the same console as inbound filtering, so both directions are visible from one place.

Gap 02 ExposedClosed

Compromised Accounts

Cost to your company

A compromised account can send on your behalf for days before anyone notices. The mail looks legitimate because it comes from a real account.

What closing it looks like

AI-powered detection that flags unusual account behavior, not only known bad senders.

Gap 03 ExposedClosed

No Record When It Matters

Cost to your company

No record kept of what happened when someone asks later.

What closing it looks like

Monthly posture and cost reporting plus quarterly reviews, so the record exists before anyone asks for it.

These gaps do not stay small. We close them before they become your next incident.

The numbers

Business email compromise cost companies $3.04 billion last year

The FBI's 2025 Internet Crime Report puts business email compromise as the number two crime type by total financial losses, up from $2.77 billion the year before. Eighty-six percent of that money left through a wire transfer or ACH payment nobody caught in time.

per the FBI's 2025 IC3 Annual Report
$3.04 billion

Every BEC attack starts in email. Most of them start because something in the mail flow was not being watched.

What we review

Nine areas, both directions of your mail

You do not get a technical report. You get the short list of what needs attention, in order, with a plain English plan your team can run.

Nine areas, one review Inbound and outbound, together, not two separate checks
CloudSource Protected
  1. 01

    Inbound Filtering

    Phishing, malicious links and attachments, and messages built to look like they came from inside your own team.

  2. 02

    Domain Authentication

    Whether your domain can be spoofed to impersonate you to your customers.

  3. 03

    Vendor & Invoice Fraud

    Spoofed vendors and fraudulent wire or invoice requests, especially the ones timed for a busy week.

  4. 04

    Account Compromise

    Whether a compromised account could send on your behalf without anyone noticing.

  5. 05

    Data Loss Prevention

    Sensitive records leaving in an attachment that nobody reviewed before it went out.

  6. 06

    Access Policies

    Who can access what, and whether those permissions are reviewed on a schedule.

  7. 07

    Compliance Alignment

    Whether your mail flow holds up against the regulations that apply to your industry.

  8. 08

    Audit & Record Keeping

    Whether there is a record of what happened when someone asks later.

  9. 09

    Zero Downtime Readiness

    Whether a cutover to better protection can happen without a mail outage.

How it works

A clear process. No guesswork

The same three steps run on every CloudSource engagement. Here is what they look like for email.

Step 01

Assess

We baseline your current mail flow, authentication records, and compliance posture, then map quick wins and priorities.

What you get: a clear roadmap and a fixed-scope proposal with contract-locked monthly pricing.

Step 02

Secure

We harden inbound filtering and outbound authentication, set access policies, and cut over on a plan we test first.

What you get: SLAs and reporting set on day one, not negotiated after the first incident.

Step 03

Deploy

Our SOC and help desk monitor, patch, and respond around the clock.

What you get: monthly posture and cost reports, plus quarterly reviews. No surprises.

The engagement, end to end
Assess
Baseline and roadmap
Secure
Harden and cut over
Deploy
Monitor and respond

Step one is free, and it ends with a number you can take into a budget meeting.

What you get at every stage
Assess
Fixed-scope proposal, pricing locked.
Secure
SLAs and reporting from day one.
Deploy
Monthly reports, quarterly reviews.
AssessDeploy
Free, no obligation You keep the findings Zero downtime, tested before we cut over
Client outcomes

Caught before it cost them

Wire fraudBlocked
$350,000 wire fraud attempt, blocked.

"CloudSource's email security quite literally saved us. A fraudulent wire request that slipped past our previous system was caught and blocked, preventing what would have been a $350,000 loss."

David, who works in healthcare
Phishing volumeReduced
Phishing reaching staff, down sharply.

"Phishing attempts reaching our staff dropped dramatically after the switch. The difference was obvious inside the first month."

Kevin, who works in consumer products
Questions

The things people ask first

01What does the free security assessment include?
We baseline your risk, compliance posture, and performance, then map quick wins and priorities. You finish with a clear roadmap and a fixed-scope proposal carrying contract-locked monthly pricing. There is no obligation attached to it.
02How is this different from the filter already built into our email?
A built-in filter reads inbound mail against known bad patterns. It does not authenticate what leaves under your domain name, it does not stop a compromised account sending on your behalf, and it does not keep the record you will want if somebody asks what happened. We cover all three, and on the inbound side we use AI-powered detection rather than a blocklist alone.
03Will switching cause downtime or lost mail?
No. Deployment runs with zero downtime, on a cutover plan we test before we execute it. Your team keeps working through the change.
04What is included in the monthly subscription?
Monitoring, patching, incident response, monthly posture and cost reporting, and quarterly reviews. It is a fixed cost, so your IT spend stays predictable and the return on it stays measurable.
05Is support available around the clock?
Yes. Our US-based experts run 24/7/365 concierge care, covering proactive monitoring, rapid response, and ongoing optimization. You are not filing a ticket into an overnight queue.
06How quickly can we get started?
It starts with the assessment. The proposal that follows states your timeline in writing before you commit to anything. Scope drives the schedule, so we will not quote you a date before we have looked.
Complimentary assessment

Find out what is actually reaching your inboxes

We baseline your mail flow, your authentication records, and your compliance posture, then hand you a roadmap and a fixed-scope proposal with the pricing locked in. No obligation, and you keep the findings either way.

  • AI-powered detection, not a blocklist alone
  • Zero downtime cutover
  • US-based experts, 24/7/365
  • Predictable fixed-cost pricing