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Email Security

Stop phishing and email fraud before it reaches an inbox

Email is the most common way attacks begin. We filter dangerous messages, block impersonation attempts, and protect your domain so criminals can't send email pretending to be you.

Phishing filteringImpersonation defenseDomain protectionStaff training
Example · Email securityLast 30 days
Phishing messages blockedBefore reaching inboxes✓ Filtered
CEO impersonation attemptFake wire request✓ Blocked
Malicious attachmentsScanned and removed✓ Filtered
Domain authenticationSPF, DKIM, DMARC✓ Configured
Phishing simulation2 staff clicked● Training sent
→ Follow-up training scheduled for two employees
The Risk

One convincing email can cost thousands

Phishing and invoice fraud target people, and they are getting harder to spot.

Fake invoices and wire requests

Criminals pose as vendors or executives and ask staff to update bank details or send urgent payments.

Stolen logins

A fake sign-in page captures an employee's password and gives attackers access to email and files.

Your domain used against you

Without domain protection, anyone can send email that appears to come from your company to your customers.

What's Included

Layered protection for your email

We combine technology and training so fewer threats arrive and your team knows how to handle the rest.

Advanced filtering

Phishing, spam, and malicious links and attachments are caught before they reach your employees.

Impersonation protection

Messages pretending to be your executives or known vendors are flagged or blocked.

Domain authentication

We set up SPF, DKIM, and DMARC, which are records that prove your email really comes from you.

Link and attachment checks

Links are checked when clicked and attachments are scanned in a safe environment first.

Security awareness training

Short training and simulated phishing tests help employees recognize suspicious email.

Easy reporting

Employees can report suspicious messages with one click so we can review and remove similar emails.

How It Works

Securing your email step by step

Most protections are in place within days, with no change to how your team uses email.

01

Review

We check your current filtering, domain records, and recent threats.

02

Protect

Filtering, impersonation rules, and domain authentication are configured.

03

Train

Employees get short training and periodic phishing simulations.

04

Monitor

We review blocked threats and reports and adjust protection as attacks change.

Why Marquis

Technology and people, protected together

No filter catches everything, so we also prepare your team. When employees know what to look for, the few threats that slip through get reported instead of clicked.

We explain domain records like SPF, DKIM, and DMARC in plain terms and handle the technical setup for you.

  • Filtering and training together
  • Domain protection set up correctly
  • One-click reporting for employees
20+Years of IT experience
< 15 minAverage response time
5-starClient ratings
99.9%Uptime target
FAQs

Frequently asked questions

What are SPF, DKIM, and DMARC?

They are settings on your domain that tell other email systems which servers are allowed to send email for you. Together they make it much harder for criminals to send fake email that looks like it came from your company.

Do we need extra email security if we use Microsoft 365?

Microsoft 365 includes basic filtering. We configure its security features properly and add layers like impersonation protection and training where they make sense for your business.

Will legitimate emails get blocked?

We tune filtering to your business and review quarantined messages. Employees can release safe messages, and we adjust rules when needed.

How does phishing simulation work?

We send realistic test emails to employees. Anyone who clicks gets brief, friendly training right away. It's a learning tool, not a way to single people out.

Get Started

Make your inbox a harder target

Schedule a 15-minute call and we'll review your email protection and domain settings.