The differentiator
Do you need a separate email security platform?
No, not if you already run ZTNA and a secure web gateway. On the same control plane you get one identity model and one alert queue. Here's what most email security vendor pages won't tell you: buying a best-of-breed email security software platform doesn't just buy you protection. It buys you a second everything. Already running Cloudflare Access and Gateway, the question stops being “which vendor do we add.” It becomes “why would we add a vendor at all.”
The stack-sprawl problem no vendor mentions
None of this shows up in a feature comparison chart, it's the operational cost of running email as a fourth or fifth standalone tool that doesn't share a control plane, an identity model, or an incident queue.
| Dimension | A standalone email security platform | On the same plane as ZTNA & SWG |
|---|---|---|
| Tools to operate | A second tool: another console, another rule set, another vendor support line, another renewal date tracked separately from the rest of the stack. | One console, one operator, one renewal, nothing new to log into |
| Identity | A second identity sync into your IdP (Okta, Entra ID, Google Workspace) that drifts the moment someone changes a group structure and forgets the second system exists. | The same identity groups that gate ZTNA app access also gate email policy |
| SOC workflow | A second SOC workflow: email alerts land in a separate vendor portal, so analysts correlate incidents by hand across two panes of glass during an active BEC attempt. | One alert queue during a live attempt, exactly when speed matters most |
| Threat intelligence | IOCs copied by hand from the email portal into your web / DNS tooling. | A domain caught in a phishing email gets blocked at the DNS/web layer automatically |
| Operator & policy engine | A second vendor relationship, a second escalation path and a second SLA to reconcile during an incident. | One team, one policy engine, the team running Access & Gateway runs email too |
Native to the same control plane, concretely, that means
- One identity model, the same Okta, Entra ID, or Google Workspace groups that gate ZTNA app access also gate email policy. No second sync, no drift between who has access to what and whose inbox gets which filtering rules.
- Shared threat intelligence, indicators Email Security flags (a malicious domain, a compromised sender, a phishing kit signature) feed directly into Gateway. A domain caught in a phishing email gets blocked at the DNS/web layer automatically, without a human copying an IOC between consoles.
- One operator, one policy engine, the team managing your Access and Gateway policies manages email policy too. No second vendor relationship, no second escalation path, no second SLA to reconcile during an incident.
Barracuda and Proofpoint, two of the names at the top of any email security provider shortlist, are both excellent at catching phishing and malicious attachments. What their product pages don't dwell on is the operational cost of running their platform as a fourth or fifth standalone tool, next to a ZTNA vendor, an SWG vendor, and a DNS filtering vendor that don't share a control plane, an identity model, or an incident queue. The full architecture this sits inside is in our SASE & Zero Trust solutions overview. Pair it with Zero Trust remote access on the same plane.
The detection
What does managed email security actually detect?
BEC, display-name spoofing, lookalike domains, credential-harvesting pages, links weaponised after delivery, and malicious attachments. BEC doesn't rely on malware. It relies on a convincing message landing in an inbox your team already trusts, from a domain that looks close enough, asking for something routine, a wire transfer, a payroll change, an invoice update. No exploit, no payload to detect. That's why traditional spam filtering, built to catch known-bad senders and attachments, increasingly misses the attacks that cost the most. Email threat protection built for 2026 has to detect intent and context, not just signatures. Here's what actually needs catching, and the mechanism behind each one:
BEC, display-name spoofing & lookalike domains
A sender that reads “John Smith, CFO” but resolves to a domain one character off from the real one. Detection relies on domain age, reputation, and historical sending patterns, not a keyword match.
BEC, account compromise
An attacker who's actually inside a legitimate mailbox (via a prior credential phish) and sends from the real address. This is the hardest BEC variant to catch, because the sender is genuine, detection leans on behavioral signals: unusual sending times, a sudden request-pattern shift, login geography that doesn't match the user's normal pattern.
Phishing, credential-harvesting pages
Fake login portals detected through URL analysis and page-content inspection at click time, not just at delivery time, since a link can be clean when it arrives and turn malicious an hour later.
Malicious links delivered post-delivery
The attack pattern that beats static, delivery-time-only scanning: a link is benign when the email lands, then gets weaponized after the fact. Time-of-click rewriting re-checks the destination every time a user clicks, not just once at inbox arrival.
Malicious attachments
Sandboxed detonation for anything that looks like an executable, macro-enabled document, or archive with embedded payloads, run in an isolated environment before the file ever reaches the end user's device.
Continuous, not a single pass
The operational point matters more than any single feature: none of this is useful as a one-time scan. BEC and phishing infrastructure evolve within the same day a campaign launches. Detection has to be continuous, not a single pass at the mail gateway.
None of this is useful as a one-time scan; combined and run continuously, it catches the message that costs the most, the one with no payload to flag. This is the enforcement layer our SASE & Zero Trust overview plane extends, alongside Zero Trust remote access, not a fourth console bolted next to it.
The assessment
How do you assess your current email exposure?
Start with SPF, DKIM and DMARC, then the known misses in your current filtering, then any third-party service sending mail on your behalf. Before rolling out anything, you need a clear read on what you're actually running today. Most organizations haven't looked at this in over a year. Run these checks first:
01
DNS authentication records
An email security assessment starts here. Is SPF configured and not too permissive? Is DKIM signing enforced on every sending domain, including third-party marketing and billing tools? Is DMARC set to p=reject or p=quarantine, or still sitting at p=none, which logs spoofing attempts without blocking a single one?
02
Existing filtering policy gaps
What's your current spam/phishing tool actually catching, and where are the known misses, the ones your helpdesk hears about after the fact?
03
Shadow IT mail flows
Are there sending domains, subdomains, or third-party services relaying mail on your behalf that nobody's tracked in the DMARC aggregate reports?
04
Close the gap with Metryx
This is exactly the gap Metryx, Brixio's free Cloudflare configuration audit tool, is built to close. Point it at your current setup and it checks your DNS authentication posture (SPF/DKIM/DMARC), flags misconfigurations that let spoofed mail through, and gives you a prioritized starting list, instead of guessing where the exposure sits before you touch a single policy.
Not sure your SPF, DKIM and DMARC actually block spoofing?
Metryx, Brixio's free Cloudflare configuration audit, checks your DNS authentication posture, SPF/DKIM/DMARC, flags misconfigurations that let spoofed mail through, and hands back a prioritized starting list before you touch a single policy. Full email security runs as a managed service.
Run an express audit- Free access, no commitment
- Read-only Cloudflare token
- No configuration required
- Downloadable audit report to share internally
- Run as many audits as you want, on as many zones as you want
The rollout
Will rolling this out break mail flow?
No. API-first deployment on Microsoft 365 or Google Workspace needs no MX change, and starts in observation mode before anything is blocked. The single biggest hesitation we hear before an email security rollout: “will this break mail flow for 2,000 people on a Monday morning.” Handled right, it won't.
Step 1
API-first deployment, no MX changes required
This is cloud email security in the literal sense: Cloudflare Email Security integrates directly with Microsoft 365 or Google Workspace via API, Microsoft Graph API or the Google Workspace API, scanning mail after it lands rather than rerouting it through a new MX record. No DNS cutover, no risk of a misconfigured mail-routing change taking down inbound mail for the whole org.
Step 2
Observation mode before enforcement
The rollout starts in monitor-only mode: every message gets scored and logged, nothing gets blocked or quarantined yet. This surfaces false-positive risk and shows what “normal” mail flow actually looks like for your organization before a single rule starts acting on it.
Step 3
Phased migration by group
Move a pilot group first, IT, or a team comfortable flagging false positives quickly, before extending enforcement org-wide. Finance and executive teams, the highest-value BEC targets, come online once the pilot group's data confirms the policy tuning holds.
Step 4
MX / inline mode stays optional
For organizations that want pre-delivery blocking, catching a malicious message before it ever reaches the inbox, not after, inline MX deployment is available as a second phase, once API-based monitoring has already validated policy accuracy. It's a deliberate upgrade path, not a forced starting point.
That's the whole rollout, API-first, observed, phased, with inline blocking as an option you grow into rather than a cutover you gamble on. We run this as a managed detection & response service, not a one-time policy configuration.
The managed service
How is email security operated day to day?
Policies tuned per client, a 24/7 SOC across Paris, Dubai and Singapore, and automatic removal of messages matching a known-bad pattern. We run enterprise email security as a managed service, not a one-time policy configuration. In practice, that means:
Policies tuned per client
- Tuned to each client's actual sending patterns
- Not a generic ruleset copy-pasted across every environment we touch
- Continuous DMARC posture management on a standing cadence
24/7 SOC, follow-the-sun
- Monitoring across Paris, Dubai and Singapore, three operating hubs and three time zones
- A BEC attempt flagged at 4am in one region is triaged live in another
- Not sitting in an inbox until the next business day
Automated remediation, human oversight
- Messages matching a known-bad pattern get pulled automatically
- Anything ambiguous gets a human analyst's eyes before a call is made
- No blind auto-delete risking a false positive on a real customer email
Same access policy as ZTNA & SWG
- The identity groups, device posture and threat intel feeding ZTNA and SWG feed email policy too
- One team, one policy model, no reconciling two vendors' definitions of a “trusted user”
- SPF/DKIM/DMARC reviewed on a standing cadence, not just at onboarding
Mail from every source is scored on the same Cloudflare control plane as ZTNA and SWG, seen, scored and remediated by risk, with Brixio operating it 24/7 on Brixio One.
This runs on Brixio's standing security posture
Cloudflare
Authorized Service Delivery Partner (ASDP)
ISO 27001:2022
certified data handling
400+
delivered projects across EMEA & APAC
3 hubs
Paris · Dubai · Singapore, follow-the-sun operations
This runs on top of Brixio's standing posture as a Cloudflare Authorized Service Delivery Partner (ASDP), ISO 27001:2022 certified, with 400+ delivered projects across regulated industries in EMEA and APAC, where a single missed BEC attempt can mean a six- or seven-figure wire transfer gone. See our SASE & Zero Trust solutions overview for how the rest of that plane is built. Talk to an expert to scope it against your own mail flow.