---
description: Get a quick and detailed side-by-side comparison for Proton Mail vs Microsoft Defender for Office 365. GetApp will help you learn more about each of these software benefits and disadvantages.
image: https://gdm-localsites-assets-gfprod.imgix.net/images/getapp/og_logo-94fd2a03a6c7a0e54fc0c9e21a1c0ce9.png
title: Proton Mail vs Microsoft Defender for Office 365 Comparison | GetApp Australia 2026
---

Breadcrumb: [Home](/) > [Encryption Software](/directory/472/encryption/software) > [Proton Mail \<span\>vs\</span\> Microsoft Defender for Office 365](https://www.getapp.com.au/compare/2050156/2054932/protonmail/vs/microsoft-defender-for-office-365)

# Compare Proton Mail vs Microsoft Defender for Office 365

Canonical: https://www.getapp.com.au/compare/2050156/2054932/protonmail/vs/microsoft-defender-for-office-365

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

-----

## At a Glance

| Metric | Proton Mail | Microsoft Defender for Office 365 |
| **Overall rating** | 4.5/5 | 4.6/5 |
| **Total Reviews** | 122 | 235 |
| **Starting Price** | USD 6.99 | - |
| **Free Trial** | Yes | No |
| **Free Version** | No | - |
| **Deployment** | Cloud, SaaS, Web-based, Mac (Desktop), Windows (Desktop), Linux (Desktop), Chromebook (Desktop), Android (Mobile), iPhone (Mobile), iPad (Mobile) | Cloud, SaaS, Web-based |
| **Support** | Email/Help Desk, FAQs/Forum, Knowledge Base, 24/7 (Live rep), Chat | - |
| **Training** | Live Online, Documentation, Videos | Live Online, Webinars, Documentation, Videos |

## Key features

### Proton Mail

- Access Controls/Permissions
- Activity Tracking
- Credential Management
- Email Attachment Protection
- Email Filtering
- Email Management
- Encryption
- Reporting/Analytics
- SSL Security
- Secure Login
- Spam Blocker
- Threat Protection
- Threat Response
- Two-Factor Authentication
- Whitelisting/Blacklisting

### Microsoft Defender for Office 365

- Access Controls/Permissions
- Anti Spam
- Email Attachment Protection
- Email Filtering
- Email Routing
- Filtering
- Greylisting
- Policy Management
- Reporting/Analytics
- Spam Blocker
- Threat Protection
- Threat Response
- Whitelisting/Blacklisting

## Links

- [View Proton Mail Profile](https://www.getapp.com.au/software/2050156/protonmail)
- [View Microsoft Defender for Office 365 Profile](https://www.getapp.com.au/software/2054932/microsoft-defender-for-office-365)
- [View Original Comparison](https://www.getapp.com.au/compare/2050156/2054932/protonmail/vs/microsoft-defender-for-office-365)

-----

## Structured Data

<script type="application/ld+json">
  {"@context":"https://schema.org","@graph":[{"name":"Proton Mail vs Microsoft Defender for Office 365 Comparison | GetApp Australia 2026","description":"Get a quick and detailed side-by-side comparison for Proton Mail vs Microsoft Defender for Office 365. GetApp will help you learn more about each of these software benefits and disadvantages.","url":"https://www.getapp.com.au/compare/2050156/2054932/protonmail/vs/microsoft-defender-for-office-365","about":[{"@id":"https://www.getapp.com.au/software/2050156/protonmail#software"},{"@id":"https://www.getapp.com.au/software/2054932/microsoft-defender-for-office-365#software"}],"breadcrumb":{"@id":"https://www.getapp.com.au/compare/2050156/2054932/protonmail/vs/microsoft-defender-for-office-365#breadcrumblist"},"@type":["WebPage","CollectionPage"],"@id":"https://www.getapp.com.au/compare/2050156/2054932/protonmail/vs/microsoft-defender-for-office-365#webpage","isPartOf":{"@id":"https://www.getapp.com.au/#website"},"inLanguage":"en-AU","publisher":{"@id":"https://www.getapp.com.au/#organization"}},{"name":"Proton Mail","description":"ProtonMail is a web-based email management platform that helps businesses securely transmit encrypted emails between users both inside and outside of the organisation.  \n\nProtonMail allows users to create accounts with automatic PGP key creation and management. It stores the messages in an encrypted format, eliminating the risk of message interception. The Android and iOS mobile applications also offer a variety of other features such as customizable swipe gestures and the capability to send expiring emails. \n\nUsers can set timers for messages to self-destruct after they are sent. It also sends push notifications for new emails and organizes them using labels.","image":"https://gdm-catalog-fmapi-prod.imgix.net/ProductScreenshot/61226edc-5153-4d8f-b275-145085c49d3e.png","url":"https://www.getapp.com.au/software/2050156/protonmail","@type":"SoftwareApplication","@id":"https://www.getapp.com.au/software/2050156/protonmail#software","applicationCategory":"BusinessApplication","publisher":{"@id":"https://www.getapp.com.au/#organization"},"aggregateRating":{"@type":"AggregateRating","ratingValue":4.5,"bestRating":5,"ratingCount":122},"offers":{"price":"6.99","@type":"Offer","priceCurrency":"USD"},"operatingSystem":"Cloud, Apple, Windows, Linux, Chrome, Android, Platform ios, Platform ipad"},{"name":"Microsoft Defender for Office 365","description":"Microsoft Defender for Office 365 is a cloud-based email security software designed to help businesses automatically detect, investigate, and resolve potential email threats on a centralized platform. Supervisors can configure security policies, perform spoof checks, and maintain a record of reported incidents. \n\nMicrosoft Defender for Office 365 allows organizations to monitor all incoming and outgoing emails, verify the authenticity of senders or domains, and scan email attachments to prevent malware attacks. Managers can view quarantined messages and monitor the impact of campaigns through actionable analytics. It also lets users filter metadata based on various options and receive automated alerts about unusual URL clicks or other suspicious activities. \n\nMicrosoft Defender for Office 365 enables businesses to automatically block spam messages and determine email traffic patterns using artificial intelligence (AI) technology and machine learning capabilities. The software also helps users offer prioritized protection to specific accounts and create custom queries to inspect security events.","image":"https://gdm-catalog-fmapi-prod.imgix.net/ProductScreenshot/d9d25d06-dd5f-467f-be05-1b51f5b10566.png","url":"https://www.getapp.com.au/software/2054932/microsoft-defender-for-office-365","@type":"SoftwareApplication","@id":"https://www.getapp.com.au/software/2054932/microsoft-defender-for-office-365#software","applicationCategory":"BusinessApplication","publisher":{"@id":"https://www.getapp.com.au/#organization"},"aggregateRating":{"@type":"AggregateRating","ratingValue":4.6,"bestRating":5,"ratingCount":235},"operatingSystem":"Cloud"},{"@type":"BreadcrumbList","itemListElement":[{"name":"Home","position":1,"item":"/","@type":"ListItem"},{"name":"Encryption Software","position":2,"item":"/directory/472/encryption/software","@type":"ListItem"},{"name":"Proton Mail vs Microsoft Defender for Office 365","position":3,"item":"https://www.getapp.com.au/compare/2050156/2054932/protonmail/vs/microsoft-defender-for-office-365","@type":"ListItem"}],"@id":"https://www.getapp.com.au/compare/2050156/2054932/protonmail/vs/microsoft-defender-for-office-365#breadcrumblist"}]}
</script>