This feature is only available to premium users. (Want a premium account? Click here to upgrade!) If you have a premium account, make sure you are signed in, then start preparing your package to send as usual. Before you hit the Send button, click the lock icon next to the Package name field. Enter the same password twice in the window that opens; you can use any combination and any number of characters. Note: It is up to you to send the password to your recipient. Packages that are password-protected will appear in the Sent and Received lists with a small padlock icon.