No TestFlight invite email gets sent for internal users

Question

I set up my application for TestFlight. For external users it is waiting for review. But if I want to invite internal users, I select them and press invite. iTunes Connects says

Answer 1

• Click on the Internal Testers tab
• Deselect the testers not receiving invites and Save
• Return to the Builds tab
• Click the Invite Testers link that appears
• Reselect the previously deselected testers and Save

Ran into the issue and this worked without a lot of extra / wasted effort

Answer 2

This is what worked for me in November 2017.

1. Get the build approved by Apple for beta.
2. Add the approved build in #1 to an app submission and save.
3. Now you should see the resend invitation buttons in TestFlight > Builds: iOS under the External Testers column, or TestFlight > Testers & Groups: All Testers under the Status column for each tester.

I'm not sure what triggered the invite email to be sent to internal testers, as there was only a button for external ones, but soon after I did #2, I got an invite as an internal tester.

Also, as I didn't track this process too carefully, I may have triggered the solution by changing the marketing build version in my app submission (#2) to be the same as my beta build version.

Answer 3

I needed to resend the invitation email to an internal tester. The following work for me:

deselect the invited tester and save. this remove the invite. re-select the same tester and save. this added the tester and re-send the email.

Also, you have to click on the link in the email to see the update. Otherwise, the TestFlight app still shows no app available until you click on the link. I found the email was in the spam folder in the first place ...