M365: Email Spam Filtering
Email Filtering, including SPAM & Phishing Protection
About Email Protection
For M365 and more!
Protecting your inbox is more than just blocking junk—it’s about stopping threats, preventing data leaks, and staying compliant. Whether you’re using Microsoft 365 Basic, Standard, or Premium, or layering in Hornet Security, we offer flexible solutions tailored to your needs. From tightening built-in filters and enabling secure message encryption, to advanced DLP policies and full email continuity, we help you choose the right tools—and configure them properly. Many powerful features are included in your licensing, but to work effectively, they require setup and tuning, which we handle as part of our hourly service.
M365 Basic-Standard EOP
Tuning Microsoft 365 EOP
Tuning Billed Hourly, No Recurring Fees.
You already have EOP’s built‑in spam and phishing filters — and they’re smarter than you might think. For clients on Business Basic or Standard, our team can tighten those settings: quarantine high‑risk phishing, block bulk sends, enforce stricter spoof protection, and enable user reporting that trains the system. You get better email hygiene without extra cost — just smarter configuration.
Hornet Security Add-On
The Every Email Platform Solution
Description here of advanced Hornet features for all platforms and what they can offer above M365 basic and standard EOP.
M365 Premium+
Connect that building!
Tuning Billed Hourly, No Recurring Fees.
Business Premium and above users get enhanced email filtering and protection — no add‑ons needed. You’ll unlock Safe Links, Safe Attachments, impersonation protection, and priority quarantine — all managed through a central, intuitive dashboard. Plus, it’s all Microsoft native, reducing vendor complexity while delivering enterprise‑grade security.
While all M365 plans offer in transit and at rest encryption, starting with Premium you can use Microsoft “Encrypt” and “Do Not Forwad” options (similar to Gmail’s “Confidential Mode”).
Note: Some Purview features require E5
| M365 Purview / Security | Basic / Standard | Hornet Addon | Premium | E3 | E5 |
|---|---|---|---|---|---|
| Message Encryption (Encrypt/Do Not Forward options)* Office Message Encryption (OME) |
 |
|
 Native |
Native |
Native |
| Encryption at Rest & In Transit Transport Layer Security (TLS) |
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| Sensitivity Labels (Manual)* | |
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|
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| Auto Sensitivity Labeling* | |
|
|
 Basic |
Full |
| DLP for Exchange, OneDrive, SharePoint* Data Loss Prevention (DLP) availability. |
|
via Hornet |
|
|
|
| DLP for Teams Chat | |
|
|
|
|
| DLP for Devices (Endpoint DLP) | |
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| Quarantine Management (via security.microsoft.com, not tied to Defender AV) |
Basic UI |
Hornet Portal |
Full Access |
Full Access |
Full Access |
| Spam / Phishing Protection | Basic EOP |
AI Hornet |
+ Defender P1 |
+ Defender P1 |
+ Defender P2 |
| Impersonation / Spoof Protection | Limited |
via Hornet AI |
Advanced |
Advanced |
Advanced + TI |
| Safe Links / Safe Attachments | |
Hornet Sandboxing |
Microsoft ATP |
Microsoft ATP |
Enhanced ATP |
* These features are available with your license, but require configuration and tuning. Setup is billed hourly as part of our standard service.