---
description: Side-by-side comparison of Mail Assure vs Microsoft Defender for Office 365. Learn more about each of the product's price, features, and see the most comprehensive reviews for UK business users.
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title: Mail Assure vs Microsoft Defender for Office 365 Comparison - Capterra UK 2026
---

Breadcrumb: [Home](/) > [Secure Email Gateway Software](/directory/32955/secure-email-gateway/software) > [Mail Assure \<span\>vs\</span\> Microsoft Defender for Office 365](https://www.capterra.co.uk/compare/178413/219685/mail-assure/vs/microsoft-defender-for-office-365)

# Compare Mail Assure vs Microsoft Defender for Office 365

Canonical: https://www.capterra.co.uk/compare/178413/219685/mail-assure/vs/microsoft-defender-for-office-365

> Detailed comparison between Mail Assure and Microsoft Defender for Office 365. Check ratings, reviews, pricing, and features to make the best decision for your business.

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## At a Glance

| Metric | Mail Assure | Microsoft Defender for Office 365 |
| **Overall rating** | 4.5/5 | 4.6/5 |
| **Total Reviews** | 29 | 237 |
| **Starting Price** | US$1.00 | - |
| **Free Trial** | Yes | No |
| **Free Version** | No | - |
| **Deployment** | Cloud, SaaS, Web-based | Cloud, SaaS, Web-based |
| **Support** | Email/Help Desk, FAQs/Forum, Knowledge Base, Phone Support, 24/7 (Live rep) | - |
| **Training** | In Person, Live Online, Webinars, Documentation | Live Online, Webinars, Documentation, Videos |

## Best for

### Mail Assure

N-able Mail Assure provides managed services providers with collective threat intelligence, 24/7 email continuity solutions, and long-term email archiving—all at an affordable price.

### Microsoft Defender for Office 365

DevOps and Security Operations (SecOps) teams&#10;Security engineering teams&#10;IT teams&#10;CISOs and CTOs&#10;Red, Blue, and Purple Teams&#10;CSIRT \&amp; forensic team&#10;Microsoft 365 administrators

## Key features

### Mail Assure

- Allow/Block List
- Anti Spam
- Archiving & Retention
- Data Recovery
- Data Verification
- Email Attachment Protection
- Email Filtering
- Email Management
- Email Monitoring
- Email Routing
- Encryption
- Filtering
- Reporting/Analytics
- Spam Analysis
- Spam Blocker
- Spam Detection
- Spam Quarantine
- Threat Protection
- Whitelisting/Blacklisting

### Microsoft Defender for Office 365

- Allow/Block List
- Anti Spam
- Email Attachment Protection
- Email Filtering
- Email Routing
- Filtering
- Reporting/Analytics
- Spam Blocker
- Spam Detection
- Spam Quarantine
- Threat Protection
- Threat Response
- Whitelisting/Blacklisting

## Links

- [View Mail Assure Profile](https://www.capterra.co.uk/software/178413/mail-assure)
- [View Microsoft Defender for Office 365 Profile](https://www.capterra.co.uk/software/219685/microsoft-defender-for-office-365)
- [View Original Comparison](https://www.capterra.co.uk/compare/178413/219685/mail-assure/vs/microsoft-defender-for-office-365)

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