Proton Mail For Business
Reviews
Star rating
Rank in Email Encryption
Pros and cons
Pros
- Ease of Use
- Reliability
- Encryption
- Security
- User Interface
- Clean Interface
Cons
- Limited Features
- Inefficient Search Functionality
- Missing Features
- Improvement Needed
- Poor Mobile Experience
- Poor Interface Design
Traffic & LLM citations
Source: G2 review data
Winning from
Losing to
Key stats
Adoption by company size
| Segment | Share of reviews |
|---|---|
| Small Business | 64.5% |
| Mid-Market | 24.6% |
| Enterprise | 10.9% |
Quarterly history
| Quarter | Reviews | Star rating |
|---|---|---|
| 2024 Q4 | 1 | 4.0 |
| 2025 Q3 | 1 | 5.0 |
| 2025 Q4 | 1 | 5.0 |
| 2026 Q1 | 2 | 4.8 |
| 2026 Q2 | 294 | 4.7 |
| 2026 Q3 | 69 | 4.7 |
Satisfaction ratings
What reviewers say
Simplicity at it's best
“I like the simplification of everything. Most email providers try and over complicate things. With proton I am able to manage my workload and get things done and organize my workflow. This includes the users and the company projects at the same time. I use the unread button r”
Best Privacy Conscious Solution for Businesses!!!
“I love the built-in encryption for proton to proton emails. Emailing team members is always secure!”
Moving from Gmail to Proton has been great for privacy
“Even though I don't use GPG encryption much anymore, I still like that it's a more secure email platform, and it has some good tools to go with it. It's also nice that Proton is a smaller company than say, Google, and can be much more responsive to the user community.”