Sophos Secure Message

Name: Sophos Secure Message
Author: Sophos Secure Message

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What Sophos Secure Message is

Sophos Secure Message is part of Sophos Email, a cloud service for protecting inboxes from phishing, business email compromise, spam, and email-delivered malware. It combines threat detection with controls for encrypted email and sensitive data. Its threat-detection methods include AI and machine-learning models, natural-language processing, sender authentication, URL rewriting, and attachment sandboxing. Post-delivery protection can claw back messages identified as malicious after they reach inboxes.

Organizations can set Secure Message policies for selected users, groups, domains, and external recipients. Outbound policies support TLS, S/MIME, push encryption, and portal encryption. With portal encryption, recipients can read and reply to encrypted messages through a secure web portal without having their own encryption infrastructure. Multi-rule data-loss-prevention and content-control policies can detect sensitive information in email and encrypt it automatically.

Sophos Email integrates with Microsoft 365 and Google Workspace, and connects threat telemetry with Sophos MDR and XDR. It also supports Outlook integration, password-based recipient verification, message expiry, and administrator access controls. The service is available through the web and can work with other email services when the customer controls the domain and DNS records. Sophos offers a free trial and two paid plans: Sophos Email and Sophos Email Plus.

Who it suits

Sophos Email suits organizations seeking email threat defense, data loss prevention, encryption, and user awareness features. It may fit teams using Microsoft 365 or Google Workspace, or another email service whose domain and DNS records they control.

What it does well

Detects phishing, business email compromise, spam, and email malware.
Supports TLS, S/MIME, push, and portal encryption.
Can automatically encrypt email detected as containing sensitive data.
Can claw back malicious messages after delivery.
Integrates with Microsoft 365 and Google Workspace.
Offers a free trial.

What to know first

Secure Message policies cannot be configured in Monitoring System mode.
Gmail integration is listed as unavailable.
Both plan prices are on request.

Plans

Plan	Billed and limits	Price
Sophos Email Plus	All Sophos Email features plus additional advanced protection and reporting capa	On request
Sophos Email	Licensed by protected users and shared mailboxes; aliases, distribution lists, and public folders are not counted · Full web portal encryption is an add-on	On request

As sophos.com lists them, read 20 Sept 2026. The maker's own page has the final word.

Getting started

Visit the Sophos Email website.
Start the free trial through an active Sophos Fusion account or submit the trial form.
Use the web service with Microsoft 365, Google Workspace, or another email service when you control its domain and DNS records.
Choose between the Sophos Email and Sophos Email Plus plans.

Verdict

Choose Sophos Email if your organization needs inbox threat protection alongside email encryption and data loss prevention. Its portal encryption lets recipients access and reply to encrypted messages without their own encryption infrastructure. Look elsewhere if you need Gmail integration or must configure Secure Message policies in Monitoring System mode.

Questions

Is Sophos Email free?

No. It is a paid service, and Sophos offers a free trial.

What does Sophos Email cost?

Pricing is on request for both Sophos Email and Sophos Email Plus.

Which email services does it integrate with?

It integrates with Microsoft 365 and Google Workspace, and supports Outlook integration. Gmail integration is listed as unavailable.

Can recipients read encrypted messages without their own encryption setup?

Yes. Portal Encryption lets recipients access and reply to encrypted messages through a secure web portal.

Can it work with other email services?

Sophos says it is compatible with other email services when the customer controls the domain and DNS records.

Where is Sophos based, and when was it founded?

Sophos is headquartered in Oxford, United Kingdom, and was founded in 1985.

Facts from Sophos Secure Message's own pages

Admin access controls: Yes · docs.sophos.com, 20 Sept 2026
Compatibility: Sophos says the service is compatible with other email services when the customer controls the domain and DNS records. · sophos.com, 8 Oct 2026
Data protection: Multi-rule DLP and content-control policies can detect sensitive email data and automatically encrypt it. · sophos.com, 8 Oct 2026
Encryption methods: Outbound Secure Message policies support TLS, S/MIME, push encryption, and portal encryption. · docs.sophos.com, 8 Oct 2026
Founded: 1985 · sophos.com, 4 Oct 2026
Gmail integration: No · docs.sophos.com, 20 Sept 2026
Headquarters: Oxford, United Kingdom · sophos.com, 23 Sept 2026
Integrations: Sophos Email integrates with Microsoft 365 and Google Workspace, and connects email threat telemetry with Sophos MDR and XDR. · sophos.com, 8 Oct 2026
Limit: Secure Message policies cannot be configured in Sophos Email Monitoring System mode. · docs.sophos.com, 8 Oct 2026
Message expiry: Yes · docs.sophos.com, 20 Sept 2026
Outlook integration: Yes · docs.sophos.com, 20 Sept 2026
Post-delivery response: Post-delivery protection can claw back messages later identified as malicious after they reach users’ inboxes. · sophos.com, 8 Oct 2026
Purpose: Sophos Email protects inboxes against phishing, business email compromise, spam, and email-delivered malware. · sophos.com, 8 Oct 2026
Recipient verification: password · docs.sophos.com, 20 Sept 2026
Secure Message policies: Secure Message policies control how users access secure incoming emails and can apply to selected users, groups, domains, and external recipients. · docs.sophos.com, 8 Oct 2026
Secure portal: Portal Encryption lets recipients access and reply to encrypted messages through a secure web portal without their own encryption infrastructure. · sophos.com, 8 Oct 2026
Support: Sophos lists Email documentation, a community, and Techvids among its customer resources. · sophos.com, 8 Oct 2026
Threat detection: Sophos Email uses AI and machine-learning models, natural-language processing, sender authentication, URL rewriting, and attachment sandboxing to detect email threats. · sophos.com, 8 Oct 2026
Trial: Sophos offers a free trial, accessible through an active Sophos Fusion account or by submitting its trial form. · sophos.com, 8 Oct 2026
Who it is for: Sophos describes Email as enterprise-grade protection for organizations seeking email threat defense, data loss prevention, encryption, and user awareness features. · sophos.com, 8 Oct 2026