@Artem – Thanks. Please keep me posted.
@Yehvan – I tried moving the messages to an imap folder called “New Leads” and then running the email processing on that folder. However, it looks like the processing isn’t designed to work that way, because I received an error message that the time of the message was before the last sync (syncs are on a 1 minute cron). Perhaps this only works if lead fills in a webform and a web form generates an email to a sales inbox. My use case is: someone emails me and I decide this might be an opportunity for new business.