We use NationBuilder as our email provider. We get hundreds of emails coming in to broadcaster accounts, sent to our general election candidates.

Is there a way of searching the subject lines of the emails, so that similar emails can all receive the same tag? Then we can create an e-mail blast answering the question. Currently we have to manually tag each sender of each email.

Is there also a way of setting up an autoreply from a broadcaster, in response to each received email?

I looked for access to email contents through activities, liquid, API and webhooks, but found nothing that gave me programatic access to email header and body texts.