# Mozilla Thunderbird alternatives

The highest-scoring alternative to Mozilla Thunderbird in Email Clients is **Spike** (73/100), against Mozilla Thunderbird's 60/100. Ranked on independent signals, not user reviews. No vendor pays for placement.

| # | Alternative | Score | Confidence | Compare |
|--:|---|--:|---|---|
| 1 | [Spike](https://www.vioscale.ai/software/spike) | 73 | 25% (low) | [Mozilla Thunderbird vs Spike](https://www.vioscale.ai/compare/mozilla-thunderbird-vs-spike) |
| 2 | [Superhuman](https://www.vioscale.ai/software/superhuman) | 72 | 61% (medium) | [Mozilla Thunderbird vs Superhuman](https://www.vioscale.ai/compare/mozilla-thunderbird-vs-superhuman) |
| 3 | [Spark Mail](https://www.vioscale.ai/software/spark-mail) | 71 | 43% (low) | [Mozilla Thunderbird vs Spark Mail](https://www.vioscale.ai/compare/mozilla-thunderbird-vs-spark-mail) |
| 4 | [Mailspring](https://www.vioscale.ai/software/mailspring) | 66 | 29% (low) | [Mozilla Thunderbird vs Mailspring](https://www.vioscale.ai/compare/mailspring-vs-mozilla-thunderbird) |
| 5 | [Mimestream](https://www.vioscale.ai/software/mimestream) | 63 | 26% (low) | [Mozilla Thunderbird vs Mimestream](https://www.vioscale.ai/compare/mimestream-vs-mozilla-thunderbird) |
| 6 | [Canary Mail](https://www.vioscale.ai/software/canary-mail) | 53 | 43% (low) | [Mozilla Thunderbird vs Canary Mail](https://www.vioscale.ai/compare/canary-mail-vs-mozilla-thunderbird) |
| 7 | [Proton Mail](https://www.vioscale.ai/software/proton-mail) | 50 | 76% (high) | [Mozilla Thunderbird vs Proton Mail](https://www.vioscale.ai/compare/mozilla-thunderbird-vs-proton-mail) |
| 8 | [Edison Mail](https://www.vioscale.ai/software/edison-mail) | 42 | 26% (low) | [Mozilla Thunderbird vs Edison Mail](https://www.vioscale.ai/compare/edison-mail-vs-mozilla-thunderbird) |
| 9 | [Tuta](https://www.vioscale.ai/software/tuta) | 41 | 27% (low) | [Mozilla Thunderbird vs Tuta](https://www.vioscale.ai/compare/mozilla-thunderbird-vs-tuta) |

Mozilla Thunderbird itself ranks #6 of 10 in Email Clients.

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*Source: Vioscale (https://www.vioscale.ai/alternatives/mozilla-thunderbird). Generated 2026-09-01T17:29:33.600Z.*