To: Jessica
Re: Following up on the proposal
Hi Jessica,
Absolutely - I’ll send over the updated proposal before our meeting tomorrow. Looking forward to walking through it together.
Best,
Alex
The to-do list
that writes itself
Conversations across your apps, turned into next steps.
Available for MacOS (Silicon) and iOS
How Zethos works
Setting up Zethos
Zethos reads where the work gets agreed, and turns it into a list you can act on.
What Zethos helps with
Once it’s set up, Zethos keeps every commitment moving, from the first promise to the last follow-up.
Your brief came by email. You met Zoe on Zoom, chatted on WhatsApp and opened her Drive link. She sent you a Notion link and a Loom. One person, six apps.
Everything, grouped.
Projects form on their own. Related commitments cluster together, so every client, launch, or company has one place with everything you owe and everything you are owed. Available on Mac today.
Zethos helps capture every promise your
team makes, on one list.
No more digging through email, Slack, and call notes for what you said you’d do.
Never forget a follow-up
Say you’ll do something, and it lands on your list. It stays there until it’s done, however busy the week gets, so nothing you promised slips.
Inbox commitments
Every “I'll send that over” in Gmail or Outlook, caught and added to the to-do list.
View anyone you’ve had contact with
Every person you’ve emailed, met or messaged, in one place, with the company and role Zethos found for them.
Shortcuts
The next step, right where you need it.
Send this email?
Reply to Email
Jump back into the conversation and send the reply you promised.
“Other tools want you to type your todos. Zethos already knows what I said I’d do, and knows when I’ve done it. It feels like a different category.”
Dekai Li
CTO @ Trident (YC S26)
Integrations
Zethos connects to the tools your work already lives in, and keeps reading them in the background.
Available: Gmail, Google Calendar, Outlook, Microsoft Teams and Slack.
Coming soon: WhatsApp, GitHub, Linear, Zoom and Telegram.
Download for free
Security is our priority.
Google CASA Tier 2
Assessed for apps that read Gmail and Calendar data.
Microsoft OAuth Publisher Verification
A verified publisher for Outlook and Teams access.
Apple Notarization + Developer ID
Signed and notarized, so macOS can check it’s untouched.
Apple App Store review
Reviewed under Apple’s privacy and data-use rules.
SOC 2 Type II infrastructure
Runs on Cloudflare’s SOC 2 Type II audited servers.
A plan for every follow-up.Free during early access.
Early Access
Free for early testers
See what Zethos catches in your everyday work.
- Connect Gmail, Outlook, Google Calendar, Slack, WhatsApp, Teams
- Auto-capture commitments from email, chat, and meetings
- Track what you owe, and what people owe you back
- Reply to emails, schedule meetings, and jump to any doc, link, or Slack thread, one tap each
- Every person you’ve talked to, in one profile, with every email, chat, and meeting stitched together
- Mac and iPhone, always in sync
Frequently Asked Questions
Only the accounts you connect. When you link Gmail, we read Gmail. When you link Slack, we read Slack. We don’t touch anything you haven’t explicitly connected - no browser history, no keystrokes, no screen capture.
No. Zethos surfaces commitments and drafts replies, but you decide what becomes a task and what gets sent. Nothing goes out without a tap.
Your data is processed by Anthropic’s Claude to extract commitments. We never train on your data. Anthropic never trains on your data. Your ledger lives on Cloudflare in the US. Full detail on the Security page.
Today: Gmail, Google Calendar, Outlook, Microsoft Teams, Slack, WhatsApp, and meeting transcripts via Zoom and Google Meet. Notion, Linear, iMessage, Telegram, Discord, Fireflies, Granola, and Otter are coming soon.
Zethos runs on Mac and iPhone today. Windows is on the roadmap. There’s no web app - Zethos runs natively so it can watch your inbox even when your browser is closed.
Zethos is free during early access. When Pro launches, early-access users get grandfathered pricing. No credit card required to start.
When you delete your account, all of your data, including OAuth tokens, commitments, meeting notes, and stored files, is deleted within 7 days. This is not a soft delete: there is no way for us to restore your account after this. You can export your data first from Settings → Export.
Yes. Add commitments manually and use Zethos as a plain to-do list. Connect an integration only when you want auto-capture.
Stop keeping the listin your head
Conversations across your apps, turned into next steps.
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