Droplets are self-contained applications (.exe or .app).  They do not require an installer and can be distributed like any other software executable.  Below are tips for common distribution methods.


Droplets are cryptographically signed to prevent tampering and pass Gatekeeper restrictions.  They must be copied using Apple software, or compressed first using the Finder.  To compress a droplet, right-click or control-click on it in the Finder and select "Compress".  Then send the resulting .zip archive to end-users.  Copying through non-Apple software, including ExpeDat, without first compressing the application may prevent the droplet from launching.

Compressing Windows droplets prior to distributing them is also a good practice.

File Copy

The most reliable way to distribute a droplet is to copy it onto a shared file server, flash drive, or other sharable media.


Droplets can be made available for download on web, FTP, or ExpeDat servers.  You should package them as a .zip first.


Email is the simplest, but least reliable way to send an application.  Some email servers and security software will block or delete email messages that have applications attached.  They may even do this without notifying the sender or the receiver.  The following steps can be taken to maximize the chances of a droplet getting through by email.

For Windows droplets, change the file extension to something other than .exe.  Let the recipient know that they will need to change it back.  This is not necessary or recommended for macOS droplets.

Package the droplet as a Finder .zip file.  The macOS Apple Mail program will do this automatically.

Send a separate email to the recipient right after you send the droplet, so that they know it should have arrived and can check their quarantine folder if it did not.

Even with these steps, some email systems will simply not allow an application to go through, so check with the recipient to make sure they received it.