To effectively implement a gradual warm up strategy, follow these steps: 1. Start Slow Begin by sending emails to your most engaged subscribers. These are individuals who consistently open and click your emails. This initial engagement will signal to ISPs that your emails are valuable and expected. 2. Monitor Performance Track key metrics such as open rates, click-through rates, and bounce rates. Monitoring these metrics helps you gauge the health of your email campaigns and make necessary adjustments. 3. Gradually Increase Volume Incrementally increase the number of emails sent over a period of weeks or months. For example, start with a small batch of 100-500 emails, then double the volume every few days, depending on your engagement metrics. 4. Maintain Consistency Consistency is key. Ensure that your sending patterns are regular and predictable. Avoid sudden spikes in volume, as they can trigger spam filters.