Posta

A native macOS mail client for Gmail and Google Workspace.

Posta is a focused inbox app for Mac. Connect one or more Google accounts, read and send mail, manage labels, search your inbox, and get local notifications — all from a fast, native SwiftUI interface.

Features

Unified inbox across multiple Gmail and Google Workspace accounts
Read, compose, reply, forward, archive, trash, star, and label messages
Rich-text compose with attachments
Hybrid search (local cache + Gmail API)
Background inbox refresh and macOS notifications

Requirements

macOS 14 or later
A Google account (Gmail or Google Workspace)

How it works

Posta connects directly to your Google account using OAuth 2.0 and the Gmail API. There is no Posta backend server. Your mail is synced between Google and your Mac; cached metadata and message bodies are stored locally on your device.

Developer

Posta is developed by Tarik Kavaz.

Contact: tarik@kavaz.org

Privacy Policy

Last updated: July 3, 2026

This Privacy Policy describes how Posta ("the App"), developed by Tarik Kavaz ("we", "us", "our"), handles information when you use the App on macOS.

Summary

Posta has no backend server and does not operate a user database.
Your email data and OAuth tokens stay on your Mac.
We do not sell your data or use third-party analytics in the App.
Posta accesses your Google account only to provide mail functionality you request.

Information the App accesses

Google account and Gmail data

When you connect a Google account, Posta uses Google OAuth 2.0 and the Gmail API with the scope https://www.googleapis.com/auth/gmail.modify. This allows the App to read, compose, send, and otherwise manage your email and labels, as needed to provide inbox, compose, search, and sync features.

Depending on how you use the App, this may include:

Email addresses and display names associated with your connected accounts
Message metadata (subject, sender, recipients, date, labels, read/star state)
Message bodies and attachments when you open, compose, or send mail
Gmail labels and mailbox structure

Data stored on your device

Posta stores data locally on your Mac, including:

OAuth access and refresh tokens in the macOS Keychain
Cached mail metadata and message bodies in a local SQLite database
App preferences (for example, notification and display settings) in UserDefaults
Connected account information needed to operate the App

Local data is stored under your user Library folder, typically: ~/Library/Application Support/Posta/.

macOS permissions (optional)

Posta may request optional macOS permissions to improve the experience:

Contacts — to suggest recipients when composing and to show sender avatars. Contact data is read from your Mac's Contacts app and is not uploaded to us.
Notifications — to alert you about new mail locally on your Mac.

You can deny or revoke these permissions at any time in macOS System Settings.

How we use information

Information accessed by Posta is used only to:

Display and sync your mail
Send messages you compose
Apply actions you take (archive, trash, star, label changes, etc.)
Search your mail
Authenticate and maintain your Google account connection
Provide local notifications, if enabled

We do not use your mail content for advertising, profiling, or training machine learning models.

What we do not collect

Posta does not:

Transmit your mail or tokens to a Posta-operated server
Run third-party analytics or crash reporting services (as of this version)
Sell, rent, or trade your personal information

Third-party services

Google

Posta communicates directly with Google services (Google Sign-In and the Gmail API) to access your mail at your direction. Google's handling of your data is governed by Google's Privacy Policy and Terms of Service.

Posta's use of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.

Data retention and deletion

Cached mail data and account settings remain on your Mac until you remove them. You can disconnect a Google account in Posta Settings, which removes associated OAuth tokens from the Keychain. You can delete local cached data by removing the App and its Application Support folder.

Disconnecting Posta does not delete mail stored in your Google account. To revoke the App's access entirely, you can also remove it from your Google Account permissions.

Security

OAuth tokens are stored in the macOS Keychain. Network communication with Google uses HTTPS. Because data stays on your device, you are responsible for securing your Mac (login password, FileVault, etc.).

Children's privacy

Posta is not directed at children under 13, and we do not knowingly collect personal information from children.

Changes to this policy

We may update this Privacy Policy from time to time. The "Last updated" date at the top will reflect the latest version. Continued use of the App after changes constitutes acceptance of the updated policy.

Contact

Questions about this Privacy Policy:

Tarik Kavaz — tarik@kavaz.org

Terms of Service

Last updated: July 3, 2026

These Terms of Service ("Terms") govern your use of Posta, a macOS application developed by Tarik Kavaz ("we", "us", "our"). By installing or using Posta, you agree to these Terms. If you do not agree, do not use the App.

1. The App

Posta is a native macOS client that lets you access Gmail and Google Workspace mail through the Gmail API. Posta is not affiliated with, endorsed by, or sponsored by Google LLC.

2. Eligibility

You must be able to form a binding contract and comply with all applicable laws. You must have permission to access any Google accounts you connect to Posta.

3. Your Google account

To use Posta, you connect one or more Google accounts via OAuth. You are responsible for:

Maintaining the security of your Google account and Mac
All activity that occurs through accounts connected in Posta
Complying with Google's terms and policies, including Workspace admin policies where applicable

We may change required OAuth scopes if needed for App functionality; you may need to re-authorize your account.

4. Acceptable use

You agree not to use Posta to:

Violate any law or third-party rights
Send spam, malware, or abusive content
Attempt to interfere with or reverse engineer the App beyond what is permitted by law
Misuse Google APIs or exceed permitted rate limits

5. Google API Services

Posta's use and transfer of information received from Google APIs will comply with the Google API Services User Data Policy, including Limited Use requirements.

6. No backend; your data stays local

Posta operates without a Posta-operated backend. Mail and credentials are stored on your Mac as described in our Privacy Policy. You are responsible for backups and device security.

7. Availability and changes

We may update, modify, or discontinue Posta or any feature at any time, with or without notice. Gmail API behavior may also change at Google's discretion, which can affect App functionality.

8. Disclaimer of warranties

POSTA IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.

We do not warrant that the App will be uninterrupted, error-free, or that mail will always sync correctly. Email delivery and storage remain subject to Google's services.

9. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, TARIK KAVAZ SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF DATA, PROFITS, OR GOODWILL, ARISING FROM YOUR USE OF POSTA.

OUR TOTAL LIABILITY FOR ANY CLAIM RELATING TO POSTA SHALL NOT EXCEED THE AMOUNT YOU PAID FOR THE APP IN THE TWELVE (12) MONTHS BEFORE THE CLAIM, OR USD $0 IF THE APP WAS PROVIDED FREE OF CHARGE.

10. Indemnification

You agree to indemnify and hold harmless Tarik Kavaz from claims arising out of your use of Posta, your connected Google accounts, or your violation of these Terms.

11. Termination

You may stop using Posta at any time by disconnecting accounts and uninstalling the App. We may suspend or terminate access to the App if you violate these Terms. Sections that by nature should survive (disclaimers, liability limits, indemnity) will survive termination.

12. Changes to these Terms

We may revise these Terms from time to time. The "Last updated" date will indicate the current version. Your continued use of Posta after changes constitutes acceptance.

13. Governing law

These Terms are governed by the laws of the Republic of Türkiye, without regard to conflict-of-law principles. Courts in Istanbul, Türkiye shall have exclusive jurisdiction, unless mandatory consumer protection laws in your country require otherwise.

14. Contact

Questions about these Terms:

Tarik Kavaz — tarik@kavaz.org