Sauna

Sauna is an AI coworker with persistent memory for teams, automating work across web app, Slack, email, iMessage, and Superhuman.

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Overview

Sauna is an AI coworker for individuals and teams. It connects to your tools, learns how you work, remembers the context that matters, and acts on your behalf across the places where you already communicate and manage tasks.

The product is positioned around persistent memory and multiplayer collaboration. Sauna runs in the cloud, can work while you are offline, and is available through the web app, iOS app, iMessage, Slack, email, and Superhuman.

Features

Learns from your work context

Sauna connects to the tools you already use and builds context from emails, documents, Slack messages, files, and other shared information so it can learn how your work actually runs.

Works across multiple front doors

Use Sauna in the web app, iOS app, iMessage, Slack, email, and Superhuman so the same workspace and memory follow you across surfaces.

Configurable autonomy

Choose between suggested actions for review and fully autonomous execution, depending on how much control you want over each task.

Keeps working in the cloud

Sauna runs in the cloud around the clock, so it can draft messages, track items, file tickets, and deliver briefings even when you are offline.

Supports multiplayer workflows

The site describes a multiplayer setup with private personal Saunas, communal shared brains, and peer-to-peer access for colleagues when you want to tap into another person's context.

Broad integrations with custom connectors

Pricing and FAQ pages say Sauna connects to over 3,000 tools and apps, and that custom MCP connectors can be added for tools not in the default list.

Use Cases

Personal work assistant
Keep a personal AI workspace connected to your messages, documents, and files so it can answer questions and act using your own context.
Shared team knowledge
Use a communal Sauna as a shared brain for a company, team, project, or function, with permissions that control who can read, edit, or act.
Background work automation
Delegate recurring work such as drafting replies, tracking items, filing tickets, and delivering briefings while Sauna runs in the cloud.
Communication triage
Handle inbox and thread triage in Slack, email, and Superhuman, including summaries, follow-ups, and drafting replies in your voice.
Role-based workflows
Point Sauna at a role-specific workflow such as founders, investors, hiring managers, or product teams, based on the solution pages.

Pros and Cons

Pros

Works across several common work surfaces, including web, iOS, iMessage, Slack, email, and Superhuman.
Learns from connected context instead of starting from scratch on each request.
Can run in the cloud around the clock, so work can continue while you are offline.
Offers team-oriented collaboration through shared context, permissions, and peer-to-peer access.
Provides a free 7-day trial and a range of paid plans for different levels of use.

Cons

The source does not show a full, detailed list of supported integrations or feature limits for every plan.
Annual billing is not currently offered.

FAQ

What is Sauna?

Sauna is an AI coworker that learns how you and your team work, remembers the context you connect, and acts on your behalf across surfaces like the web app, iMessage, Slack, email, and Superhuman.

How long does setup take?

The site says most people are up and running in under 10 minutes after connecting tools and giving Sauna some context.

What tools does Sauna connect to?

Sauna connects to over 3,000 tools and apps, and the site also says you can add custom MCP connectors for tools that are not listed.

Can teams use Sauna together?

Yes. Sauna is multiplayer, and team plans include shared or communal ways to work from the same source of truth while controlling who can read, edit, or act on shared context.

Is my data private and under my control?

Sauna says your data is never used to train models, is not shared with third parties, and can be deleted or exported by you.