Thunderbird
Reviews
Star rating
Rank in Email Management
Pros and cons
Pros
- Functionality Features
- Ease of Use
- Inbox Management
- Efficiency
- Customer Support
- Security
Cons
- Difficult Setup
- Missing Features
- Sync Issues
- Slow Loading
- Bug Issues
- Steep Learning Curve
Traffic & LLM citations
Source: G2 review data
Winning from
Losing to
Key stats
Adoption by company size
| Segment | Share of reviews |
|---|---|
| Small Business | 64.9% |
| Mid-Market | 24.5% |
| Enterprise | 10.6% |
Quarterly history
| Quarter | Reviews | Star rating |
|---|---|---|
| 2024 Q4 | 1 | 5.0 |
| 2025 Q1 | 1 | 5.0 |
| 2025 Q2 | 1 | 5.0 |
| 2025 Q3 | 4 | 5.0 |
| 2025 Q4 | 1 | 4.5 |
| 2026 Q1 | 1 | 4.0 |
| 2026 Q2 | 5 | 4.8 |
Satisfaction ratings
What reviewers say
Open-Source, Universal Email Client with Strong Community Support
“It is opensource, with lots of resources and forum support online. It is universal and can link to almost any email server. I especially like the Local Folders to store my excess emails.”
Easy Desktop Email Management Across All Accounts
“Ease of use. i can manage all of my email accounts very easily from desktop.”
Facilidad de uso y privacidad con fácil configuración
“Facilidad de uso. Privacidad y configuración. Se integra muy fácil con cualquier correo, sea empresaria o comercial como Google o Outlook. Un software muy sencillo que consume pocos recurso en memoria como en almacenamiento. Lo mejor: TOTALMENTE GRATIS.”