To automate follow-up after a discovery call, set up a CRM stage that starts the moment the call ends. This sends a set of emails you already wrote, spread over 10 to 14 days. You do not have to remember to send anything. You build the trigger, the emails, and the timing once, and it runs on its own after that for every lead who reaches that stage.
This is not about writing better emails, it is about making sure the emails you already wrote actually go out, every time, without you having to remember.