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Sophos Email

Stop phishing, BEC, and ransomware before the inbox.

Sophos Email is AI-powered email security that integrates directly with Microsoft 365 and Google Workspace via API. Inline scanning, time-of-click URL rewriting, sandbox detonation, and AI-based BEC detection - all without changing your MX record or breaking existing mail flow.

Key Capabilities

Modern email security, deployed in an afternoon

Sophos Email is built API-first for cloud mail. No MX-relay configuration, no mail-flow rules, no third-party gateway to maintain. Connect to your tenant, define policy, you’re protected.

API-first integration

Connects to Microsoft 365 or Google Workspace via Graph API. No MX changes, no journaling, no impact on existing mail flow. Deploy in an afternoon.

Inline scanning

Messages get inspected before delivery to the user’s mailbox. Known-bad URLs, attachments matching threat signatures, and obvious phishing patterns are blocked at the gateway level.

Time-of-click URL rewriting

Every URL in every email gets rewritten to a Sophos-proxied link. When the user clicks, the URL is re-evaluated against current intel - catches the “benign-at-delivery, weaponized-later” pattern.

Sandbox detonation

Attachments get detonated in an isolated sandbox before delivery. Macro-laced documents, malicious scripts, and zero-day payloads are caught dynamically, not just by signature.

AI-based BEC detection

Machine learning trained on millions of business-email-compromise samples spots no-payload social-engineering attempts: tone, urgency, payment-redirect language, executive impersonation.

Outbound DLP & encryption

Define data-loss-prevention policies for outbound mail (credit cards, PHI, source code). Sensitive messages get auto-encrypted with TLS or in-message portal-based delivery.

Deep Dive

Why API-first beats MX-relay deployment

Traditional email security routes mail through a third-party MTA in front of your tenant: change the MX record, mail flows through them first, then onto your inbox. API-first skips that layer entirely. Same protection, less plumbing.

  • No MX-record change. Your existing mail flow is untouched. No DNS changes, no propagation waiting, no risk of misrouted mail during cutover.
  • No mail-flow rules to maintain. Most MX-relay deployments need elaborate connectors in M365 to keep mail loops from happening. API integration avoids all of that.
  • Native rich features. API access lets Sophos see folders, labels, replies, conversation threads - things an MTA in front of your tenant can’t see at all.
  • Cleaner remediation. If a malicious email lands and gets clicked, Sophos can pull it from all affected inboxes via API. MX-relay vendors can’t do post-delivery remediation cleanly.
  • Compliance-friendly. Mail still routes the way Microsoft or Google guarantee. Auditors prefer this; many compliance frameworks now explicitly favour API-based deployments.
Legacy: MX-relay deployment sender 3rd-party M365 Sophos: API-first sender M365 user
Who Deploys It

Cloud-mail organizations, mostly

Sophos Email is built for the way email actually works now - cloud-hosted, hybrid-accessed, and integrated into productivity suites. These are the three deployment patterns we see most.

1

M365 / Workspace organizations

Cloud-mail tenants of any size, from a 20-user SMB to a 50,000-user enterprise. API deployment scales the same way at either end.

Cloud-native at any scale
2

Legacy gateway replacements

Organizations on Mimecast, Proofpoint, or another legacy MX-relay gateway who are ready to retire the third-party MTA. Sophos Email runs in parallel during cutover so nothing breaks.

Retire the MTA in front
3

Compliance & regulated industries

Finance, healthcare, legal, and public-sector orgs with DLP, outbound encryption, and audit requirements. Built-in policy templates for HIPAA, PCI, GDPR, and PIPEDA scope.

Compliance policy out-of-the-box
Pairs Well With

Layered email defense

Sophos Email is the technical filter. Pair it with awareness training and inbox visibility for a layered email-security program that covers the human, technical, and post-delivery sides.

Sophos Phish Threat
Awareness

Phish Threat

The natural pair. Sophos Email filters the bulk; Phish Threat trains your users to spot the small fraction that always gets through.

Sophos Email Monitoring
Post-delivery

Email Monitoring

Catches the small fraction of threats that always get past pre-delivery filtering, especially no-payload BEC and hijacked-thread attacks.

Sophos Endpoint Protection
Endpoint

Endpoint Protection

If something does get clicked, the same Intercept X agent on every endpoint stops the payload from executing. Last-line defense for the email-borne attacks that succeed.

Ready to harden your inbox?

Request per-mailbox pricing for Sophos Email, or talk to our team about replacing your existing email gateway with a clean API-first deployment.