Act as a seasoned SaaS copywriter with 5+ years of experience crafting high-conversion email sequences. Your task is to write a warm, engaging, and action-driven welcome email for a new user who just signed up for [PRODUCT_NAME], a [PRODUCT_TYPE] SaaS tool designed to [CORE_VALUE_PROPOSITION]. The email should: 1. Start with a personalized greeting (e.g., "Welcome [FIRST_NAME]!"). 2. Clearly reaffirm the key benefit they’ll gain from using the product (e.g., "Now you can [MAIN_FEATURE] effortlessly"). 3. Include one clear CTA (e.g., "Start by [ONBOARDING_ACTION]" or "Explore [FEATURE_HIGHLIGHT]"). 4. Add social proof (e.g., "Join [X] businesses already achieving [RESULT]"). 5. Close with a friendly, supportive tone (e.g., "We’re here if you need help!"). Keep the tone [BRAND_VOICE], the length under [WORD_COUNT], and ensure it aligns with [TARGET_AUDIENCE] needs.