Build and execute email marketing campaigns for a solopreneur business. Use when building an email list, writing email sequences (welcome, nurture, sales), designing broadcast campaigns, improving open and click rates, or setting up email automation. Covers list building, segmentation, email copywriting, sequence design, deliverability, and metrics. Trigger on "email marketing", "email campaign", "email sequence", "email list", "newsletter", "email automation", "improve email open rates", "nurture emails", "welcome email".