title: Flutter - launch email clients WITHOUT sending an email and knowing which client(s) a user might use
body: <p>Need to offer a user a button to open their email client if they are using password-less authentication. </p>
  
  <p>Have looked at url_launcher, but it's wants to create an email, the app_availability wants specific package names or just default email for ios... </p>
  
  <p>Has anyone come across a way to just show a user a snackbar with whatever email clients they might have on their device?</p>