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Gradually increasing email send volume for new domains.
Email warm-up is the process of sending emails from a new domain or IP address in small, incremental volumes to establish trust with ISPs. Starting with a small audience of engaged recipients and gradually increasing send volume helps build a positive sender reputation. Without proper warm-up, new domains risk being flagged as spam, resulting in poor deliverability. A well-executed warm-up plan ensures emails reliably reach inboxes, paving the way for successful campaigns.