The “non-interactive” category includes Gmail email addresses where GlockApps does not mark the received messages as ‘seen’. This group of test email addresses is useful when you send a cold email to new Gmail subscribers who have not interacted with your emails before.
The “interactive” category includes Gmail email addresses where GlockApps marks received messages as ‘seen’. This group of email addresses helps test email deliverability with Gmail if your Gmail recipients have already interacted with your messages and showed a sort of positive engagement with your emails.
Ideally, your message should go to Inbox with both groups of addresses. It would mean that your sender reputation with Gmail is very good. When the sender reputation is at the average or low level, Gmail looks at user engagement. Thus, you may see different email placements with the interactive and non-interactive Gmail addresses.