Checker for Gmail™

SafeX Mail

Install the local mail component

Checker for Gmail™ uses this local component to connect directly to the IMAP and SMTP servers you choose and to import Thunderbird accounts you explicitly select. Gmail features do not require this component.

Official installer

macOS · arm64 · v0.6.7

Download installer
Show SHA-256 d59d0250f8c7177c89516596b517b8e79c10f549c436b3cb2980821f0386c06e
Three-step installation of the local mail component Download the official installer from this page, open it to install the bridge, helper, and updater and register the fixed Native Messaging hosts, then return to the Accounts page and select Try again. The local component connects directly to the mail provider you chose; mail and credentials never pass through SafeX. 1. Download the official installer Only from this page, for your device. Your browser handles the download; the extension neither requests nor manages your download history. 2. Open the package and install The installer places only the SafeX bridge, helper, and updater, then registers the fixed Native Messaging hosts for detected supported browsers. 3. Return to the Accounts page and select Try again Back in Checker for Gmail™, select Try again on the Accounts page. You do not need to reinstall the extension. Data boundary The local component communicates directly with the mail provider you choose. Messages, attachments, and IMAP/SMTP credentials are not sent to the SafeX website or servers.
Installation flow: three steps, and Gmail features do not require this component.

Manual installation steps

  1. Download the official installer for your device only from this page. Your browser handles the download; the extension neither requests nor manages your download history.
  2. Open the downloaded package and follow the macOS prompts. The installer places only the SafeX bridge, Thunderbird helper, and updater, then registers the fixed Native Messaging hosts for detected supported browsers.
  3. Return to the Accounts page in Checker for Gmail™ and select “Try again.” You do not need to reinstall the extension.

One-click updates after installation

Only after you have allowed local-component access does the extension ask the separate updater host to check versions. When an update is available, the Accounts page shows the installed and target versions; downloading and installation begin only after you select “Update now.” There is no resident daemon and no downloads permission.

The updater fetches a strict manifest and three executables only from the fixed gmail.safex.cloud update path. It verifies a dedicated SafeX Mail Ed25519 signature, monotonic release sequence, exact sizes and SHA-256 hashes, then checks each executable's Apple Developer ID, SafeX Team ID, hardened runtime, timestamp, and Gatekeeper assessment. The three-file set is installed on one filesystem in helper → updater → bridge commit order; interruptions roll back through a transaction journal, and a rejected release is fused off instead of repeatedly executed.

Older installations do not yet contain the updater, so they require one manual installation of the latest package from this page. Later releases can then use one-click updates in the extension. A check or verification failure preserves the existing usable version and offers this manual installer as the fallback.

Data boundary

The local component communicates directly with the mail provider you choose. Messages, attachments, and IMAP/SMTP credentials are not sent to the SafeX website or servers.

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