Don't send emails to people who have already confirmed

[KreativeKrise]

First of all, thank you for a great plugin!

But I have a use case. I'm not sure how to handle it with your plugin. I offer some forms where people can get freebies. On the first request, the user should get the DOI email, which works fine. But when the same user requests another freebie, the user should not receive the DOI email again, but be sent directly to the "doi success segment".

Is there any way to archive this with your plugin?

If it's not possible yet, maybe some additional fields like "send email to already confirmed contacts" or "segments to add contacts who already confirmed" could be added?