Hi @Trah1n,
I would suggest unless its absolutely necessary to trigger the email, while the call is still going on.
Do this operation after the call.
Once the call is done, analyze the transcript, and trigger according to the summary of the call.
You could use Make.com to get this working or write a custom python function.
I've implemented this solution for some of my clients across different platforms such as email, whatsapp, sms.
DM me, and we can discuss this approach further.