Active Campaign is an email service provider that offers email marketing automation for marketers to improve your sales. Active Campaign used this free trial email sequence to get potential customers to upgrade to one of their software plans.
After welcoming new subscribers to the free trial, they start sending some sales follow up emails. In these emails they inform you about the benefits of Active Campaign. If you haven't started your free trial yet, they will also try to convince you to get started. At the end of the sequence they inform the subscribers that the trial has expired, but that there is a chance to upgrade. Throughout the whole sequence, they give you the chance to get in contact with the Active Campaign Team.
You can read more about Active Campaign here: https://www.activecampaign.com/