How to isolate new subscribers for separate warmup flows?

Isolating new subscribers into separate warmup flows gives you the chance to build engagement and establish positive sending patterns before adding them to your regular broadcast schedule. New subscribers are typically your most engaged audience, and their behavior during the first few interactions shapes how mailbox providers perceive your entire program.

A warmup flow usually consists of a welcome series that delivers high value content, sets expectations, and encourages interaction. You might send three to five emails over the first two weeks, each designed to generate opens and clicks. This creates positive engagement history that benefits both the subscriber's individual reputation signal and your domain's overall reputation.

After the warmup period, you transition subscribers into your regular segmentation and campaign schedule. This approach also lets you identify and remove low quality addresses early. If someone does not open a single email during a well crafted welcome series, they probably never will. Warmup flows are like teaching new sailors the ropes before sending them into rough seas.