Comparison · Productivity
Fathom vs Spark Mail: which AI agent is better?
A side-by-side look at Fathom and Spark Mail on quality, price, capabilities and trust. Scores measure observable public data; prices come from each vendor's own pricing page. Every fact is sourced and dated.
| Fathom Fathom | Spark Mail | |
|---|---|---|
| Agent Score | 85 | 53 |
| Entry price | $19/mo · free plan | $10/mo |
| Trust | ✓ VERIFIED | ✓ VERIFIED |
| Capabilities documented | 12 | 5 |
| Free plan | ✓ Yes | No |
| Free trial | — | — |
| Public API | ✓ Yes | — |
| MCP support | ✓ Yes | — |
| Open source | No | — |
| Last verified | 07 Oct 2026 | 09 Oct 2026 |
Score breakdown
| Component | Fathom | Spark Mail |
|---|---|---|
| Capabilities | 100 | 38 |
| Integrations | 50 | Not measured |
| Documentation | 100 | 70 |
| Pricing clarity | 100 | 100 |
| Transparency | 100 | 30 |
| Freshness | 100 | 100 |
| Human oversight | Not measured | 100 |
Choose Fathom if…
- You want a higher Agent Score (85 vs 53).
- You want a free plan to start.
- You want a free plan.
- You want more documented capabilities (12 vs 5).
- You want a public API.
- You want MCP support.
Choose Spark Mail if…
On the measured criteria, Fathom leads — see opposite.
See the full picture: Fathom · Spark Mail · more Productivity agents · all comparisons.