Email Security
Email is the #1 attack vector for businesses. Coro blocks phishing, business email compromise, malware attachments, and spam before they ever reach your inbox.
Why Coro Email Security
Stop Threats Before They Land
Over 90% of cyberattacks start with a phishing email. Coro's AI-powered email security scans every inbound and outbound message for malicious content, suspicious links, impersonation attempts, and data leaks — stopping attacks before your team ever sees them.
Works seamlessly with Microsoft 365 and Google Workspace. Blue Cap IT handles the full setup and ongoing management.
Anti-Phishing
AI analyzes email content, sender reputation, and link destinations to catch phishing attempts — even sophisticated spear-phishing targeted at specific employees.
Impersonation Protection
Detects business email compromise (BEC) where attackers impersonate executives, vendors, or trusted contacts to trick employees into transferring funds or sharing data.
Malware & Attachment Scanning
Every attachment is scanned and sandboxed before delivery. Malicious files are quarantined automatically — even zero-day threats.
URL Protection
Links in emails are checked in real time at the moment of click. If a link becomes malicious after delivery, Coro still blocks it.
Key Capabilities
What Coro Email Security Covers
Phishing Prevention
AI-powered analysis of email content, headers, and sender behavior catches phishing attempts that basic spam filters miss.
Business Email Compromise
Detects impersonation of executives and trusted contacts. Flags suspicious requests for wire transfers, gift cards, or credential sharing.
Malware Protection
Attachments are detonated in a secure sandbox. Malicious payloads are blocked before they reach any endpoint.
Outbound DLP
Monitors outgoing emails for sensitive data — credit card numbers, social security numbers, health records — and prevents accidental or malicious data leaks.
Quarantine & Review
Suspicious emails are quarantined for admin review. Users can request release of false positives directly from the quarantine digest.
M365 & Google Integration
Connects directly to Microsoft 365 and Google Workspace via API — no MX record changes, no mail flow disruptions, no downtime during setup.
Frequently Asked Questions
How is Coro Email Security different from the spam filters built into Microsoft 365 or Google Workspace?
Microsoft and Google's built-in filters are competent at catching obvious spam and known bad senders, but they're tuned for the average tenant and miss targeted attacks — spear phishing addressed to specific employees, business email compromise from spoofed executive accounts, malicious links that pass reputation checks at delivery and turn hostile later, and well-crafted phishing that uses legitimate sending services. Coro adds a dedicated AI layer on top: it analyzes the content, sender behavior, and link destinations, runs attachments through a sandbox, and re-checks every link at click time. Many of our clients run Coro alongside the native M365/Google filters, not as a replacement — defense in depth.
Do I have to change my MX records or have email downtime to deploy it?
No. Coro connects to Microsoft 365 and Google Workspace through their APIs — no MX record changes, no mail flow rerouting, no downtime during setup. The deployment looks like authorizing a Coro service principal in your tenant; it then sees mail in your tenant in near-real-time, scans inbound and outbound messages, and quarantines threats. Because there's no rerouting, the cutover is reversible — you can disable the integration any time and email flow is unaffected. Most deployments are live within an hour.
What is business email compromise (BEC), and how does Coro stop it?
BEC is one of the most expensive attack types — an attacker impersonates someone trusted (CEO, CFO, key vendor, business partner) and convinces an employee to wire funds, share credentials, change banking details, or buy gift cards. There's often no malicious attachment or link, just a well-crafted email asking for a routine business action. Coro detects BEC by analyzing the sender's relationship to the recipient (is this how the CEO normally writes? does the domain match prior legitimate correspondence?), looking for impersonation signals (spoofed display names, look-alike domains), and flagging high-risk requests (wire transfers, banking changes, gift card purchases) for review. Suspicious BEC attempts are quarantined or flagged before the employee acts.
What happens to legitimate emails that get caught as false positives?
Quarantined messages don't disappear. Users get a daily quarantine digest listing what was held and why, with a one-click option to release a message they were expecting. Admins (or Blue Cap IT, if we manage the platform for you) can review quarantine in bulk, release messages, and tune detection rules to prevent future false positives from the same sender or pattern. Senders that get incorrectly flagged repeatedly can be added to an allowlist. The false positive rate on Coro is low compared to legacy filters, but the workflow when it does happen is fast and self-service.
Does Coro Email Security work with both Microsoft 365 and Google Workspace?
Yes — and many businesses run both (M365 in headquarters, Google Workspace at a subsidiary, or vice versa). Coro connects to each via the native API and protects them under the same dashboard and policies. Outbound DLP, phishing detection, attachment scanning, link rewriting, and quarantine all work identically across both platforms. We'll map your specific environment during a free assessment and configure the right integration pattern.
Secure Your Inbox
Get Coro Email Security from Blue Cap IT
Contact us for a free email security assessment. We'll show you the threats your current setup is missing — and how Coro can stop them.