The AI agent for newsletter writers
Sauna gathers the week's stories, drafts the issue in your voice, builds the send in your ESP, and reports open and click rates so you know what landed before the next one.
What it does
What Sauna does for newsletter writers
- 01
Issue drafting
Sauna gathers the week's links and notes, drafts the full issue in your voice with subject-line options, and stages it in ConvertKit for review.
- 02
Story curation
It scans your saved sources and Reddit for relevant stories, drafts a ranked rundown with a one-line take on each, ready for you to cut.
- 03
Subject-line testing
Sauna drafts subject-line variants, sets up the A/B test in your ESP, and reports which won after the send.
- 04
Performance recaps
It pulls open, click, and unsubscribe rates from ConvertKit, drafts the recap, and names which sections drove the most clicks.
Put Sauna to work on this.
Get started for freeIn context
Ask in chat. It does the work.
Sauna shows up where you already work — the web app, Slack, email, iMessage, and Superhuman. It reads what it needs, does the task, and comes back with the draft for your approval.
Try it
Ask in plain words
The literal prompt for this job. Open it in Sauna and it picks up from there.
“Pull this week's saved links and Reddit threads, draft the newsletter in my voice with three subject lines, and stage it in ConvertKit for me to review.”
Plugs into the tools you already run — and thousands more, or any MCP server.
Good to know
Questions, answered.
Will it send the issue without me?
No. It drafts and stages the issue in ConvertKit; you review every word and the audience, then send it yourself.
Can it match my voice?
It learns from your past issues and drafts in your tone, and since you edit before sending, the final voice is always yours.
Is my data safe?
Sauna reads only what you connect, and acts only after you approve. Your workspace and its memory are yours, not training data.
Keep exploring
More ways teams use Sauna
Put Sauna to work for newsletter writers.
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