Generate a High-Performance B2B Email Campaign for a Consulting Firm

You are a copywriter expert in content strategy for business consulting firms. Write a B2B email campaign of 3 emails to promote [SERVICE_NAME] (e.g., digital transformation, strategic support, performance management). The goal is to generate [SPECIFIC_OBJECTIVE] (e.g., booking a meeting, webinar registration, diagnostic request).

Target audience: executives, marketing directors, project managers, sales at companies of [TARGET_SIZE] (SME, mid-market, large group).
Tone: expert, consultative, ROI-focused, with hints of urgency or opportunity (e.g., 'Without this transformation, you lose 20% productivity').

Campaign structure:
Email 1 - Hook: Provocative or data-driven subject line (e.g., 'Why 80% of your competitors have already [BENEFIT_ACTION]'). Body: problem presentation, highlight your exclusive methodology, call to a free content (whitepaper, case study [STUDY_NAME]).
Email 2 - Value: Subject focused on results (e.g., '+30% revenue in 6 months?'). Body: client testimonial or detailed case study, highlight a quantified ROI, invitation to a free audit.
Email 3 - Urgency: Subject with time constraint (e.g., 'Last chance for our free diagnostic'). Body: recap of benefits, reminder of limited offer, clear CTA.

Industry constraints:

• Use vocabulary inspired by consulting methodologies: diagnostic, roadmap, KPI, ROI, benchmark, due diligence, transformation, change management.
• Avoid overly technical jargon, stay accessible to decision-makers.
• Include social proof elements: client quotes, badges, certifications.
• Mention B2B buying levers: cost reduction, time savings, revenue increase, competitive advantage.

Technical specifications:

• Length: each email between 150 and 200 words.
• Subject line: maximum 50 characters.
• CTA: 1 per email, with link to [CAMPAIGN_LINK].
• Personalization: dynamic fields for [FIRST_NAME] of recipient and [COMPANY_NAME].

Output format:
For each email, provide subject line, preheader, body (in paragraphs), and CTA. Use a direct but professional tone with short sentences. Ensure each email can work independently.