MacWinlink downloads and documentation
======================================

MacWinlink is a native macOS Winlink email client for amateur radio
operators, developed and distributed by the Amateur Radio Safety
Foundation, Inc. (ARSFI).  MacWinlink is currently in public beta.

Website:      https://www.winlink.org
TestFlight:   https://testflight.apple.com/join/M2hzwA4T
Release repo: https://github.com/jjones9527/macwinlink-releases (Helper only)


What is in this folder
----------------------

/MacWinlink/
    README.txt                          This file.

    Security + policy documents
    ---------------------------
    SECURITY.html / .md                 Security reporting policy.
    CVD_POLICY.html / .md               Coordinated vulnerability disclosure policy.
    PRODUCT_LIFETIME.html / .md         Product lifetime + security update commitment.
    PRIVACY.html / .md                  Privacy policy.

    Release artifacts
    -----------------
    MacWinlink_Helper_1.0.0-beta40.dmg  Signed Helper disk image, beta40.
    MacWinlink_0.99.40_sbom.cdx.json    CycloneDX 1.5 Software Bill of
                                        Materials, beta40.

Future security advisories will land directly at this folder root
with filenames like MacWinlink_advisory_YYYY-MM-DD_<slug>.txt.


How to install MacWinlink
-------------------------

1. Main app: install via TestFlight.
   https://testflight.apple.com/join/M2hzwA4T

2. Helper (optional, needed for VARA / Direwolf / rigctld): download
   the MacWinlink_Helper_*.dmg file above and drag MacWinlink Helper.app
   to /Applications.


How to report a bug
-------------------

MacWinlink main app:
    Use TestFlight's built-in "Send Beta Feedback" button.  Reports
    include the TestFlight build number and route to the maintainer.

MacWinlink Helper:
    File at https://github.com/jjones9527/macwinlink-releases/issues


How to report a security issue
------------------------------

Read SECURITY.html for the current reporting procedure.
Please do NOT report security issues through the TestFlight
feedback button, the public GitHub issue tracker, or public
mailing lists.


System requirements
-------------------

macOS 15 (Sequoia) or later, on Apple Silicon (M1 / M2 / M3 / M4 /
M5).  Intel Macs are not supported.


Contact
-------

For general MacWinlink questions and community discussion:
- QRZ.com forums: search for "MacWinlink"
- Winlink Programs Google Group


Last updated: 2026-08-25