For my first 100 users, cold email worked best. I scraped a list of niche ecommerce owners, sent personalized audits showing exactly where their sites leaked revenue, and offered a free trial fix. About 40 percent replied, and 15 converted. It was manual, tedious, and completely unplanned. I expected SEO or content, but direct outreach beat everything. Timing mattered too. I hit them right before Black Friday.