title: How to forward Firebase App inviation mail?
body: <p>I have received an invitation by mail to use a Firebase App from the developer. To get started, I have to open this invitation mail on the device where the App is going to be installed.</p>
  <p><a href="https://i.stack.imgur.com/aaU7X.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/aaU7X.png" alt="Firebase Invitation Mail" /></a></p>
  <p>This is where I get stuck. If I forward the mail to my gmail account (that is on the device), but the mail never arrives. Who recognized this issue? And how can I solve it?</p>