1. You must have Alfred powerpack to use workflows. Buy the powerpack here.

2. Click here to download the workflow.

3. Double click on the file to add it to Alfred.

Optional, if you want to change the sender name from YOALFRED.

4a. Register an application with Yo! here with an app name of your choosing. Note this app name will be what the recipient sees.

4b. Paste your Yo! app token in the Alfred workflow script, as such:

TOKEN={{YOUR_YO_TOKEN}}
curl --data "api_token=$TOKEN&username={query}" http://api.justyo.co/yo/

You are set! Yo! to your heart's content and to your friends' growing annoyances.

Just type yo! andyjiang in your Alfred console.

Happy coding! Direct all hate tweets @andyjiang.