Secure Email for Lawyers Using Outlook

Ensure Confidential Communication with a Secure Email Outlook Add-in for Legal Professionals

Protect client information, maintain legal privilege, and meet compliance obligations with smarter email safeguards. SendGuard helps law firms prevent misaddressed emails, incorrect attachments, and reply-all mistakes. There’s no disruption to legal workflows — our secure email add-in works within Microsoft Outlook & Microsoft 365. It’s designed for confidentiality, compliance, and control.

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The Hidden Risk in Everyday Legal Emails

1 in 3 Data Breaches Involve human error. Even experienced legal professionals make mistakes — email errors are one of the leading causes of data breaches.
Misaddressed Emails Breach client confidentiality. Sending sensitive information to the wrong recipient can immediately violate ethical and legal obligations.
Attorneys Send Hundreds of Emails Weekly High communication volume increases the likelihood of mistakes, especially across multiple cases and clients.
Microsoft 365 Lacks Preventive Protection Outlook does not prevent users from sending sensitive emails to the wrong recipient or with incorrect attachments.
Manual Email Checks Are Not Reliable Relying on human review alone is inconsistent and often fails under pressure.
Time Pressure Increases Email Errors Urgent deadlines and fast-paced legal work lead to rushed decisions and overlooked mistakes.

Why Secure Email Communication is More Important Than Ever

Legal professionals have an ethical duty to take reasonable measures to protect confidential information. Numerous factors are putting lawyers under more pressure than ever:

  • Increased email messages across multiple clients, cases, and jurisdictions
  • Speed of communication expected from clients and partners
  • Hybrid work environments increasing distractions and context switching

These can quickly lead to risks, such as:

  • A junior associate sending a draft contract to the wrong “John Smith”
  • A partner accidentally using reply-all, including opposing counsel in a confidential thread

While Microsoft 365 supports basic email encryption, it lacks other preventive email security features.

SendGuard is a secure email communication add-on for Outlook. Trusted by large and small firms worldwide, SendGuard helps protect client information from security breaches and ensures compliance with legal regulations.

Legal email risk and compliance

SendGuard Prevents Email Mistakes Before They Become Legal Incidents

SendGuard adds a critical before-send safety layer to Microsoft 365, designed specifically to reduce human error in email. It helps law firms prevent disclosure of privileged information, reduce compliance risks, protect client trust and firm reputation, and enforce consistent email policies across teams.

Unlike traditional tools, SendGuard works before the email is sent — when mistakes can still be stopped.

Confirmation Prompts – Prevent Misaddressed Email Messages

  • Alerts when emailing new or external recipients

  • Highlights unusual recipient combinations

  • Prompts users to confirm sensitive emails

  • Reduces risk of sending to the wrong client

  • Supports professional conduct and confidentiality obligations

Policy & Compliance Checks – Enforce Legal Standards

  • Detects sensitive keywords and data patterns

  • Flags potential breaches before sending

  • Supports firm-wide email policies

  • Helps meet regulatory and ethical requirements

  • Reduces reliance on manual review

Reply-All Protection – Avoid Accidental Disclosure

  • Warns users before replying to large groups

  • Identifies external participants in threads

  • Prevents accidental exposure of legal discussions

  • Reduces reputational and legal risk

Send Delay / Undo Send – Stop Errors in Motion

  • Adds a delay window to outgoing emails

  • Allows users to cancel mistaken sends

  • Acts as a final safety net, especially useful during high-pressure situations

Audit & Logging – Strengthen Accountability

  • Tracks email risk events and user actions

  • Provides audit trails for compliance reviews

  • Supports internal investigations

  • Helps demonstrate due diligence

Secure Email for Lawyers, All Within Microsoft 365

  • Works seamlessly with Outlook (desktop, web, mobile)
  • No email rerouting or infrastructure changes
  • Fast deployment across the organization
  • Centralized admin controls for IT teams
  • Minimal user training required
Microsoft 365 & Outlook 365
New & Classic Outlook (Windows)
Outlook for Mac
Outlook Web Access (OWA)
iOS & Android Devices

Enterprise-Ready Deployment

Enterprise installation and configuration can be managed using MSI packages, Microsoft Intune, or Group Policy, giving IT teams centralized control across the organization.

No External Mail Routing

SendGuard isn’t an external email provider or gateway. It works inside your existing Outlook and Microsoft 365 environment, without rerouting mail through Standss servers. Healthcare staff can continue working as usual while improving email security, minimizing training requirements, and reducing outbound data exposure risk.

Legal Email Risk & Compliance Insights

Practical guidance and real-world strategies for legal data loss prevention, protecting client confidentiality, and supporting compliance in legal organizations.

Email Security
How Law Firms Can Prevent Email Data Breaches

Learn how simple mistakes lead to major legal incidents — and how to prevent them.

Learn more
Compliance
Understanding Legal Data Loss Prevention (DLP)

Explore how DLP applies to law firms and where email risks are often overlooked in everyday Outlook workflows.

Learn more
Microsoft 365
Limitations of Outlook for Legal Email Protection

Why native tools don’t go far enough in preventing human error.

Learn more
Best Practices
Creating a Law Firm Email Policy That Works

Practical steps to reduce email-related risks across your firm and build consistent outbound email controls for all staff.

Learn more
View All Articles

Frequently Asked Questions

If you can’t find the answer to your question below, you may find more information in our expanded product FAQs or in our Documentation and Knowledge Base section.

No. SendGuard is a Microsoft 365 add-in that provides greater email security. It automatically prompts the user to confirm before sending, preventing outbound mail errors. Installing SendGuard is the most secure way to use Microsoft Outlook for lawyers.

SendGuard prevents users from accidentally sending sensitive information to the wrong person. It prevents accidental data exposure, helping maintain confidentiality and meet regulatory obligations such as GDPR, PIPEDA, and CPRA.

No, SendGuard adds lightweight prompts only when necessary. You can configure the prompt settings to align with your law firm’s email policy. For example, you can set prompts to appear only when sending to external email accounts or to new accounts.

No. SendGuard operates within your Microsoft 365 environment. We don’t route any messages through external email servers, ensuring your law firm maintains control over all sensitive data within electronic communications.

SendGuard is typically quick to deploy with minimal IT effort. SendGuard is suitable for solo practices, small businesses, and enterprises alike.

Yes. You can define rules based on your law firm’s compliance requirements. Multi-user configuration is possible with an MSI package, Microsoft Intune, or Group Policy.

Yes. SendGuard supports Outlook across desktop, web, and mobile, ensuring data security on every device.

Pricing is typically user-based. See our pricing information or contact us for a free software trial.

Stop Email Mistakes Before They Impact Your Clients

In legal services, one email error can compromise confidentiality, damage trust, and create compliance risk. SendGuard helps your firm prevent these mistakes before they happen. It’s quick to deploy, easy to use, and built for Microsoft 365.

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