title: How to get deployed firebase cloud function url for Flutter
body: <p>Hi I am following a video over from youtube which doesn't explains everything to a newbie like me I am unable to find out a couple of things from the video. First is my mailchimp api key I dont know where to find it second is the url of hosted firebase function. If anyone have done it or can look at it and solve it or try it by yourself please do its really small code you guys can help me also know that is it for all the user's subscribing to newsletter that they will get it or its just one newletter and thats all.
  Here's the url to the youtube video and the website where code is given
  <a href="https://robertbrunhage.medium.com/flutter-web-newsletter-using-cloud-functions-mailchimp-f1d68555c696" rel="nofollow noreferrer">Website where code is given</a>  <a href="https://www.youtube.com/watch?v=h3cjH8woLXE" rel="nofollow noreferrer">Youtube video</a></p>