Your mail is yours.

Glassmail is a Mac app that reads and sends email on your behalf. It is built so that we never see your mail. This page explains exactly what happens to your data.

Last updated 12 November 2026

The short version

There is no Glassmail mail server. Your Mac connects directly to your email provider. The only other thing the app sends is a licence check to our payment provider, described below.
Your mail is stored on your Mac. Your passwords are stored in your Mac's Keychain.
AI features run on your Mac. What you write and read is not sent to us or to an AI company.
We don't sell, rent or share your data, and we don't show ads.

Your email and accounts

When you add an account, Glassmail connects from your Mac to your provider's mail servers (for example Gmail, iCloud or Microsoft) using IMAP and SMTP, or Microsoft's own sign-in for Microsoft accounts. Messages, attachments and drafts are downloaded to and stored on your Mac. Changes you make, such as archiving or sending, go from your Mac to your provider. None of this passes through a server run by Glassmail.

Passwords, app passwords and sign-in tokens are stored in the macOS Keychain on your Mac.

AI features

Summaries, reply drafts and the assistant use Apple Intelligence on your Mac, or a language model you choose to download in Settings, which also runs on your Mac. Your email content is not sent to Glassmail or to any third party to generate these results. AI features are optional.

Sender pictures

To show pictures next to messages, Glassmail can look up a sender's picture from your Contacts, from Gravatar (for people) or from the sender's own domain (for companies). Only the email address or domain is used for these lookups, never anything from inside a message, so a picture loading can't reveal that you opened a particular email. You can turn this off in Settings.

Tracking in email

Many marketing emails contain invisible tracking images. Glassmail removes these before showing a message.

AI agents you connect

If you turn on access for AI agents (for example Claude, Codex or Cursor) in Settings, those apps on your Mac can search and read your mail through Glassmail. They cannot send, delete or change anything. This is off until you turn it on, and the agent's own privacy policy applies to what it does with what it reads.

This website

This website doesn't use advertising or tracking cookies. Our hosting provider may keep standard server logs, such as IP addresses, for security and reliability.

Purchases and licences

Payments are handled by Polar, which acts as the merchant of record and processes your payment details under its own privacy policy. We receive what we need to issue and support your licence, such as your email address.

When you activate, check or deactivate a licence, Glassmail sends Polar your licence key, your Mac's name (as set in System Settings › General › Sharing), a one-way hashed identifier for the Mac, and the app version. This is how a licence is limited to three Macs and how you can free one up. No email content is ever sent.

Contact

Questions about privacy? Write to hi@glassmail.app.