There’s no reason you can’t do both. As another sibling comment mentions, llms will get you part of the way there, but often have things you still need to work out. This helps you get a framework in place first, so that you can take an iterative approach to the parts that actually require effort from a human to deal with.
Just to be clear, I wasn't advocating against the do-nothing script, I've done that many times myself in the past. In fact, ChatGPT suggested a hybrid approach in the full result, as it didn't have enough information to look up the e-mail address so that step remained largely unchanged.