Privacy

Last updated October 20, 2026

The short version

• The Lowtide app runs on your Mac. Your email, calendar and messages are read and kept there; Lowtide keeps no copy of them anywhere else.
• To sort an email or write a draft, that conversation goes to OpenAI or Anthropic: directly with your own key, or through Lowtide’s server, which passes it on and keeps only how much you used, never the text.
• This website keeps only what you type into the early-access form, privately, to write to you about Lowtide.
• We don’t sell your data, use it for ads, or use it to train AI models.

This website

The early-access form

When you ask to become a design partner, we keep your email address and anything else you choose to tell us: your name, your role, the tools you work in, and your note. We use it only to write to you about Lowtide’s early access.

It’s stored in private storage at Vercel, our hosting provider, in the United States, where only the site’s own server can read it. Each entry is filed under a scrambled form of your email address, so the address never appears in a file name. We keep it until early access ends or until you ask us to remove it.

Everything else

The site sets no cookies and runs no advertising trackers. It counts visits with Vercel Web Analytics, which uses no cookies and doesn’t identify you. Vercel, which hosts it, keeps short-lived technical logs (such as IP addresses) to run and protect the service, under Vercel’s privacy policy.

The Lowtide app

What it reads

• Gmail: messages addressed to you, to find what needs a reply; your own sent mail, to notice questions nobody answered and to write drafts that sound like you.
• Google Calendar: your upcoming and recent meetings, and who’s in them.
• Slack: direct messages and mentions addressed to you, if you connect it.
• GitHub: pull requests waiting for your review, if you connect it.
• Granola: answers from your own meeting notes about the people on your list and your meetings, if you connect it.
• Coding agents: approval requests and questions from Claude Code or Codex, if you set them up.

Lowtide asks Google only to read your mail, send the replies you choose to send, and read your calendar. It never deletes, archives or relabels anything.

Where it’s kept

On your Mac: your sign-ins in the macOS Keychain, and your list, its history and settings in Lowtide’s folder in Application Support. The list and its history are encrypted, with a key kept in the Keychain. History is kept for 90 days. Lowtide doesn’t let macOS keep copies of what Google, Slack or the AI models send back in its web cache.

What leaves your Mac, and where it goes

• To the AI model (OpenAI, or Anthropic with your own key for it): to sort an email, its latest messages; to write a draft, the last few messages in the conversation, up to three of your own emails to that person (for your writing style), and what your meeting notes say about them, if Granola is connected.
• Through Lowtide’s server, if you use Lowtide’s AI instead of your own key: those same requests go to our server, which sends them to OpenAI on Lowtide’s account and returns the answer. It doesn’t keep or log the text; it records only that a request was made, whether it sorted or drafted, the model, and how many tokens it used, to keep within the daily allowance. Lowtide asks OpenAI not to store drafts.
• To Granola, if connected: the names and addresses of people on your list, and your meetings’ titles, times and guests, to ask your notes about them.
• To Google, Slack and GitHub: the requests that read your data from them, and the replies you send.

Nothing is sent from your email or Slack unless you press Send.

Your Lowtide account

When you connect Google in a version of Lowtide with its own sign-in, the same sign-in creates your Lowtide account so you can use Lowtide’s AI. We keep your Google account’s ID, email address and name, when you signed in, a scrambled form of your session token (never the token itself), and the usage records above. They’re kept in our database at Supabase, in the United States, and used only to run the service and keep it within its allowance. Signing out of Lowtide AI in Settings ends the session on your Mac and on our server. Delete all Lowtide data, in Settings → Accounts, deletes your account and all its records from our database.

Google user data

Lowtide’s use and transfer to any other app of information received from Google APIs will adhere to the Google API Services User Data Policy, including the Limited Use requirements.

Removing everything

In Lowtide, choose Settings → Accounts → Delete all Lowtide data. It deletes your Lowtide account and its records from our server, removes Lowtide’s access at Google and Granola, takes Lowtide’s hooks out of Claude Code and Codex, deletes everything Lowtide keeps on your Mac, and quits. Then drag Lowtide to the Trash.

Or one piece at a time:

• Disconnect each account in Settings → Accounts. Disconnecting a Google account also removes Lowtide’s access at Google; you can check your Google account’s connected apps.
• Remove the Slack and GitHub apps you installed for Lowtide from their settings.
• Delete the folder ~/Library/Application Support/Lowtide and the Keychain items named Lowtide.

Contact and changes

To have your early-access details removed, or to ask anything about privacy, reply to any email from us, or send the form again with your address and “remove me” in the note. We’ll take care of it within seven days. If this policy changes, the date above changes with it.