An email cadence is a pre-planned series of email messages that are sent to a contact list over a period of time. Cadences can be used for a variety of purposes, such as onboarding new subscribers, nurturing leads, or promoting a product or service. Email cadences usually consist of 3-5 email messages that are spaced out over a period of days or weeks. The timing and content of each email message in the cadence is carefully planned to maximize engagement and conversion rates.