91% of Breaches Start in the Inbox.
Layered email defense for Dallas–Fort Worth businesses tired of watching invoices get redirected and wire transfers vanish. Advanced threat protection, DMARC in enforcement, and a team trained to spot the ones that get through.
Microsoft 365 Default Settings Aren't Enough.
Microsoft 365 out of the box catches the obvious phishing — the misspelled Nigerian prince, the fake FedEx notification. What it misses is the one that actually costs you money: the spoofed vendor email that says "we've updated our banking, please send the next invoice payment here."
That email lands in your CFO's inbox looking legitimate because the attacker did their homework. The domain is close enough. The signature block matches. The invoice PDF is real, just with different wire instructions. Microsoft's default filters won't catch it. Your CFO will. Or they won't.
Layered email security assumes some phishing will land. It adds authentication (DMARC/SPF/DKIM in enforcement), advanced threat protection with sandboxing, business-email-compromise rules that flag banking-change language, and phishing simulations that keep your team's guard up. Every layer catches what the last one missed.
Default M365
- SPF/DKIM/DMARC not in enforcement
- No advanced threat protection sandbox
- No BEC / wire-fraud detection rules
- Users never trained on real phishing
48 Technologies email security
48 Technologies email security- DMARC in reject enforcement (p=reject)
- ATP sandboxing + link rewriting
- BEC rules on banking-change language
- Quarterly phishing simulations with reporting
Four Layers Between Your Inbox and the Attacker.
One filter is a single point of failure. We stack four layers so phishing that gets past one still has three more to defeat.
Authentication (DMARC/SPF/DKIM)
- SPF, DKIM, DMARC in enforcement
- Vendor alignment across your senders
- MTA-STS + TLS-RPT deployed
- Quarterly authentication audit
Advanced threat protection
- Attachment sandboxing before delivery
- URL rewriting & time-of-click scanning
- Impersonation detection on look-alikes
- Quarantine review and release workflow
BEC & wire-fraud rules
- Detect banking-change language
- Flag CEO-fraud impersonation
- External-sender warning banners
- Auto-hold on flagged invoice attachments
User training & simulation
- Quarterly phishing simulation campaigns
- Just-in-time coaching on clicks
- Reporting dashboard for leadership
- New-hire baseline within first week
From p=none to p=reject in 90 Days.
DMARC in reject enforcement is the gold standard — and it's also where most rollouts stall because misconfiguration silently drops legit mail. We do it in phases with real reporting so nothing breaks.
See what's actually happening.
Turn on DMARC in monitor mode (p=none) with aggregate reporting. See who is sending as your domain — including the third-party services you forgot about (Calendly, QuickBooks, marketing tools).
- DMARC p=none + reporting endpoint
- SPF & DKIM audit across senders
- Third-party sender inventory
- Baseline pass-rate report
Fix the misalignment. Then quarantine.
Add SPF/DKIM records for every legit sender. Watch the aggregate reports until pass rate is >95%. Move DMARC to quarantine (p=quarantine) so unauthorized mail lands in junk instead of the inbox.
- SPF/DKIM records for legit senders
- Pass-rate verified >95%
- Move to DMARC p=quarantine
- Two weeks of quarantine reports
p=reject. Then keep it there.
Once quarantine has been clean for 2+ weeks, move to full reject. Layer on ATP, BEC rules, and phishing simulations. Ongoing monthly DMARC review keeps you enforcement-clean forever.
- DMARC p=reject enforcement
- ATP sandboxing activated
- First phishing simulation run
- Monthly enforcement review scheduled
Per Mailbox, All Layers Included.
Email security is per-mailbox — a 15-user firm and a 150-user firm scale linearly. We bundle all four layers (authentication, ATP, BEC rules, training) into one per-user price so you're not stitching together three separate vendor bills. Typical range: $12–$22 per mailbox per month, all-in, depending on M365 license tier and whether ATP is already bundled in your Microsoft plan.
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1. 1. Mailbox countStraight per-mailbox pricing. Volume tiers kick in at 25, 75, and 150 seats. No hidden minimums.
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2. 2. Existing M365 tierBusiness Premium and E5 already include Defender for Office 365. We credit what you're already paying for and price only the additive layers.
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3. 3. Compliance overlayHIPAA, PCI, or CMMC add retention, encryption, and archiving requirements. Priced as an add-on, not bundled by default.
M365 Default vs. 48 Technologies vs. Enterprise Email Gateway
Three ways to defend the inbox at a 25–150 employee DFW business. Only one of them stops BEC without absorbing your IT budget.
M365 Default Settings
- SPF/DKIM/DMARC not enforced
- No sandboxing on attachments
- No BEC / wire-change detection
- Users never trained or tested
- Impersonation attacks land clean
- Nobody watches quarantine
48 Technologies Email Security
- DMARC in reject enforcement
- ATP sandboxing + link rewriting
- BEC + wire-fraud detection rules
- Quarterly phishing simulations
- One vendor, one bill, one dashboard
- $12–$22 per mailbox all-in
Enterprise Email Gateway
- $35–$60 per mailbox per month
- Complex admin console + FTE to run it
- Multi-year contract minimums
- Great — with a dedicated email admin
- Overkill for 25–150 employee firms
- Separate bill from your MSP
I've watched BEC take $180K out of a Texas business in a single afternoon. The attack cost the criminal $8 in domain registration. The defense costs $15 a mailbox per month. This math shouldn't be hard.
See What's Actually Reaching Your Inbox.
Free 15-minute Email Security Audit. We'll show you your DMARC record, your SPF alignment, and how many unauthorized senders are spoofing your domain right now.