Looking for a Microsoft Defender for Office 365 Plan 1 alternative?
Microsoft Defender for Office 365 Plan 1 (P1) is the entry-level add-on to Exchange Online Protection (EOP). It provides Safe Links, Safe Attachments, and basic anti-phishing features but lacks advanced controls, outbound scanning, and visibility.
Strengths & Weaknesses of Microsoft Defender for Office 365 Plan 1
| P1 Basics | P1 Weaknesses |
|---|---|
| Affordable add-on for basic phishing and malware protection | No outbound filtering or data loss prevention |
| Lacks advanced features like threat hunting or automated response | |
| Basic, entry-level solution with limited visibility |
At a Glance
| Capability | Defender P1 | Libraesva Email Security |
|---|---|---|
| Anti-Spam & Phishing | Basic | Advanced: Semantic AI detection |
| Attachment Sandboxing | ||
| URL Protection | ||
| Outbound Filtering | ||
| Threat Hunting | ||
| Auto Remediation | ||
| Deployment | Cloud only | Cloud / On-prem / Private |
| Teams / OneDrive Scanning |
Full Feature Breakdown
| Feature | Defender P1 | Libraesva Email Security |
|---|---|---|
| Message, body & header scanning | Anti-phishing policies | Advanced: Semantic AI detection |
| Attachment inspection & quarantine | Cloud-based sandbox | |
| URL analysis & protection | Link rewriting with time-of-click scan | |
| Threat investigation & hunting | No post-breach investigation | |
| Automated incident response | Alerts only (manual response | |
| User awareness & phishing simulation | ||
| Core anti-spam & malware filtering | via Exchange Online Protection spam & malware filtering | Multi-engine + API filtering |
| Outbound protection (DLP + anti-spam) | No outbound scanning | Outbound DLP rules, encryption triggers, anti-spam |
| Email archiving & retention | No (depends on Exchange license) | Email Archiver option |
| eDiscovery & legal hold | Email Archiver option | |
| Audit log retention | Email Archiver option | |
| Encryption | Policy-based AES-256 encryption | |
| Insider risk monitoring | Adaptive Trust AI identifies insider threats & account compromise | |
| Business analytics & reporting | KPI dashboards, trends & reporting API | |
| Deployment | Cloud-only (Microsoft 365 service) | Cloud, on-prem, private cloud (multi-tenant or dedicated) |
| Integration | Microsoft-centric APIs (Graph API for basic integration) | Open integration: REST API, syslog, SIEM/SOAR; M365 & Google |
| Social graph / identity heuristics | Basic sender checks only | Social graph model identifies anomalies |
| Voice / collaboration features |
FAQ
What is Microsoft Defender for Office 365 Plan 1 (P1)?
What protection does Defender P1 include?
What are the main limitations of Defender P1?
Why replace Defender P1 with Libraesva?
When does it make sense to layer Libraesva with Defender P1 instead of replacing it?
Does Libraesva provide outbound filtering and DLP?
Does Libraesva support threat hunting and automated remediation?
How does attachment sandboxing compare?
What deployment options does Libraesva offer vs Defender P1?
Does Libraesva scan Teams and OneDrive like Defender P1?
How can this help with internal-looking phishing and spoofed ‘internal’ emails?
Libraesva Email Security sees what others miss
Understand the message
Semantic AI goes beyond keywords and reads the intent behind every email, catching impersonation and AI-written deception others ignore.
Know what “normal” looks like
Adaptive Trust AI continuously maps your organization’s communication patterns to flag unusual interactions and behavioral anomalies in real-time.
Layers of defense
Secure gateway scanning with deep AI stops threats at every stage. Semantic and Adaptive Trust AI detect deception, while sandboxing and URL checks stop what others miss.
Trusted by companies like these
Libraesva delivers layered, AI driven defense to protect businesses and people against modern email threats.
Libraesva provides better core protection and enhances it with advanced AI-based phishing detection, outbound DLP, and simpler management, making it a more capable all-in-one solution.
