Get Mailwing for macOS

System requirements

• macOS 11 Big Sur or later
• Universal binary — runs natively on Intel and Apple Silicon
• ~250 MB free disk space

Install

1. Click Download above to grab the DMG.
2. Open the DMG and drag Mailwing to /Applications.
3. First launch: right-click the app icon → Open → Open.

First-launch Gatekeeper

Mailwing isn't yet signed with an Apple Developer ID (signing fees run hundreds of dollars a year per platform — out of scope for a one-person OSS project today). macOS will refuse the first double-click on an unsigned app. Three ways to allow it, in order of friendliness:

Option 1 — Right-click → Open (recommended)

1. Open /Applications in Finder.
2. Right-click (or Control-click) Mailwing → Open.
3. In the dialog, click Open again. Trust is remembered from then on.

Option 2 — System Settings

1. Try to open Mailwing once (it'll be blocked).
2. Go to System Settings → Privacy & Security.
3. Scroll down — there'll be a line saying Mailwing was blocked. Click Open Anyway.

Option 3 — Terminal

If you'd rather strip the quarantine attribute in one go:

xattr -d com.apple.quarantine /Applications/Mailwing.app

Install via Homebrew

If you prefer a single command, the Homebrew cask handles download and placement for you:

brew install --cask vinaysamtani/mailwing/mailwing

Make Mailwing your default mail client

Open Mailwing → menu bar Mailwing → Set as default mail client. Or via System Settings → Default Web Browser (for mailto: links).

Troubleshooting

"Mailwing is damaged and can't be opened"

This is the quarantine attribute, not actual damage. Run Option 3 above (the xattr command).

App quits immediately on first launch

Open Console.app, filter for Mailwing, then try to launch again. If you see a useful stack trace, please open an issue with the log.

How do I uninstall?

Drag /Applications/Mailwing.app to the Trash, then remove the user-data directory at ~/Library/Application Support/mailwing if you also want to clear accounts and notes.