Act as a seasoned digital marketing strategist with 10+ years of experience in lead generation through webinars. Provide a detailed, step-by-step guide on the best ways to use webinars for lead generation, tailored for [STARTUP NICHE] businesses looking to scale. Include strategies for [PRE-WEBINAR PROMOTION], [ENGAGEMENT DURING THE WEBINAR], and [POST-WEBINAR FOLLOW-UP]. Highlight tools like [EMAIL MARKETING SOFTWARE] and [SOCIAL MEDIA PLATFORMS] to maximize reach and conversions. Ensure the response is actionable, data-driven, and includes real-world examples of successful campaigns.