# AI Email Clients: the tools companies use

63 companies on usedby use at least one of the 3 tools in this category with a public customer. Superhuman leads with 32 companies. Counts are of companies on usedby, not of the whole market. Latest check 2026-10-07: 58 of 66 public lines checked.

> Enhanced email clients for triage, summarize, and draft (Inbox Zero)

Family: [Operations & Workflow](https://www.usedby.ai/tools/category/operations-workflow.md)

## Ranking

Public customers count every public line, job-post signals included; ties share a rank.

| Rank | Tool | Public customers | Confirmed | Observed | Signals |
|---|---|---|---|---|---|
| 1 | [Superhuman](https://www.usedby.ai/tools/superhuman.md) | 32 | 15 | 17 | 0 |
| 2 | [Shortwave](https://www.usedby.ai/tools/shortwave.md) | 22 | 15 | 7 | 0 |
| 3 | [Fyxer AI](https://www.usedby.ai/tools/fyxer-ai.md) | 12 | 7 | 5 | 0 |

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Source: https://www.usedby.ai/tools/category/ai-email-clients · How we check: https://www.usedby.ai/methodology