Drip Campaign is a scheduled sequence of emails sent over time to educate, nurture, or convert subscribers.
It matters because email is one of the few channels a business can own directly. Strong email fundamentals improve trust, deliverability, segmentation, and long-term lead nurturing.
Example
A software trial receives setup instructions on day one, a tutorial on day three, and a support reminder later. The scheduled drip still needs exit rules so users who cancel or finish onboarding do not receive inappropriate follow-ups.