eM Client
Worth it
Confidence: Low
Buy if you want a free, polished desktop email client to replace Outlook or Thunderbird.
New check
Comparison
eM Client and Thunderbird both land on Worth it.
Buy if you want a free, polished desktop email client to replace Outlook or Thunderbird.
Buy if you want a free, open-source desktop client that unifies several email accounts.
| Compare | eM Client | Thunderbird |
|---|---|---|
| Verdict | Worth it | Worth it |
| Best for | Outlook refugees on Windows or Mac | Multi-account power users |
| Who it's not for | Teams needing shared inboxes or admin controls (Guess: it's a per-device client) | Webmail-first Gmail/Outlook users . redundant layer |
| Privacy | No known public vulnerabilities found in the sources reviewed.⁵ | Actively maintained: regular Mozilla advisories and 2026 CVE fixes, including an emergency zero-day patch.14 |
| Public sentiment | Users on Reddit praise eM Client as a well-integrated, fantastic Outlook replacement.⁴ | Opinions split: G2 users consistently praise it while Reddit threads and Trustpilot reviews grumble about early friction.⁷ |
| Biggest gotcha | No public security page found during review . ask support before business use⁵ | Critical zero-days affecting Thunderbird have required emergency patches14 |