For Mac · In early access

Nothing you owe slips.

Lowtide lives in your menu bar and keeps one calm list of what you owe people: the replies you haven’t sent, the answers you’re waiting on, and what you promised in meetings. Each comes with a draft, ready when you are.

Become a design partnerSee how it works

Works with Gmail, Google Calendar, Slack, Granola and GitHub

Lowtide’s morning plan: a meeting with Maya in 4 minutes and what you owe her, then today’s timeline marked with who you owe a reply and who you’re waiting on.A promise from a meeting: send Priya the onboarding checklist, due before today’s kickoff, with Done and Write to Priya.

What it keeps

Three lists you keep in your head, kept for you.

You owe

Emails and Slack messages that need your reply, ranked by who’s waiting and how long it takes. Each says why it’s there, and arrives with a draft in your voice.

Waiting on

Questions you asked that nobody answered. After a couple of quiet days they come back with a friendly nudge, already written. Automated mail is left out.

Promised

After a meeting, Lowtide reads your Granola notes and lists what you said you’d do, for whom and by when. One click writes the email.

How it works

Connect once. Then it’s one short list.

  1. 1

    Connect your tools

    Gmail and Google Calendar (several accounts side by side), Slack, Granola and GitHub. Lowtide reads what’s addressed to you.

  2. 2

    It sorts what needs you

    A direct question, someone blocked, a newsletter: each message is judged, and only what needs you makes the list, with the reason.

  3. 3

    You act in a click

    Send the draft, change a word, snooze it, or mark it done. Every send waits eight seconds with Undo.

A day with Lowtide

A rhythm, not another feed.

Your plan

Today’s meetings, who you owe, and who you’re waiting on. One button starts the day.

What you owe them

“Maya in 4 min”, in the menu bar, with the feedback you promised her, so you walk in prepared.

What you promised

Your next steps from the notes, as cards that stay until they’re done.

Wind down

Close the last few things, set the rest for tomorrow, and end the day on “You’re clear.”

Built for trust

It drafts. You decide.

  • Nothing goes out without you. Every send waits eight seconds with Undo, and every email shows who your reply is going to.
  • Your mail stays on your Mac. Lowtide has no server. To sort or draft an email, its conversation goes to OpenAI or Anthropic with your own key, and nowhere else.
  • It shows its work. Every card says why it’s there, and History keeps everything you sent, allowed or put away, for 90 days.
  • It reads, it doesn’t rummage. Lowtide asks Google only to read mail, send the replies you send, and read your calendar. It never deletes or rearranges anything.
A reply to Priya Shah marked Priya is waiting on this, showing her email, who the reply goes to, and a drafted answer with a Send button.
Claude Code asking to run a database migration, with Allow and Don’t allow, in the same list as email.

If you build with agents

Your coding agents wait on you too.

When Claude Code or Codex asks to run a command or needs a decision, it shows up in the same list as your email, ready to allow or answer in one click. If you’re away, the agent simply asks in the terminal as usual.

Works with

The tools your day already runs on.

Questions

Good to know.

How is this different from Gmail's own AI or an AI email client?

They work inside one inbox. Lowtide sits above your tools: an email reply, a Slack question, and something you promised in a meeting land in the same short list, in the order they matter, each with the reason it's there. It doesn't replace your email app; it tells you what in it needs you.

What does it connect to?

Gmail and Google Calendar (several accounts side by side), Slack, Granola for meeting notes, and GitHub for review requests. If you run Claude Code or Codex, their approvals and questions show up too. Outlook, Apple Calendar and Linear aren't supported yet.

Where does my email go?

It stays on your Mac. Lowtide has no server of its own. To sort an email or write a draft, that conversation goes to the AI model, using your own OpenAI or Anthropic key, and nowhere else. With Granola connected, the names on your list and your meetings' titles and guests go to Granola to ask your notes.

Will it send anything on its own?

No. Lowtide writes drafts; you send them. Every send waits eight seconds with Undo, every email shows who your reply goes to, and everything you do through Lowtide is kept in its History.

Do I need an AI key?

For drafts, today, yes: an OpenAI or Anthropic key you already have. Without one, Lowtide still sorts your mail with simpler rules and keeps your list; it just won't write the replies.

Which Macs does it run on?

Macs with macOS 26 or later. Lowtide is a Mac app first; there's no iPhone app yet.

What does it cost?

Lowtide is in early access with a small group of design partners, who use it free while they help shape it. They'll hear about pricing before anyone else.

Early access

Become a design partner.

We’re working closely with a small group of founders and operators whose work spans email, Slack and meetings. You get Lowtide early, free, with a direct line to the people building it and a real say in what it does next.