What Is Email Sequence?

An email sequence (also called a drip campaign or cadence) is a series of pre-planned emails sent to a prospect or group of prospects over a defined time period, typically with automated triggers for sending based on time delays or recipient actions. In B2B sales, email sequences are the foundational mechanism for systematic outreach and follow-up. A typical cold outreach sequence includes 3-7 emails spaced over 2-4 weeks. The first email introduces the value proposition, subsequent emails provide additional proof points or angles, and the final email creates closure urgency. Each email in the sequence should provide new value or a different perspective rather than simply asking whether the prospect saw the previous message. Modern AI-powered sequences go beyond static templates. AI SDR platforms like Prospect AI generate unique, individually researched emails for each prospect in the sequence, adapting messaging based on the prospect's company, role, and engagement signals. If a prospect opens but doesn't reply, the AI may switch to a different angle. If the prospect engages on LinkedIn, the sequence may adjust its email approach accordingly. This dynamic, AI-driven approach to sequences typically achieves 2-3x higher response rates compared to traditional template-based sequences.