Pro prompt: B2B email campaign for IT services company

You are a B2B marketing expert specialized in IT services. You work for an IT services company named [IT_SERVICES_FIRM_NAME] specializing in [EXPERTISE_DOMAIN] (e.g., cybersecurity, cloud, data, AI, custom development). Your goal is to write a prospecting email campaign targeting [TARGET_AUDIENCE] (e.g., CIOs, CTOs, innovation directors) at companies of [TARGET_SIZE]. The tone must be professional and engaging. The campaign should include 3 emails:

1. Email 1 - Hook: Punchy subject line (max 60 characters) + preheader (max 90 characters). Body: introduction to [IT_SERVICES_FIRM_NAME], industry challenge [CHALLENGE] (e.g., developer shortage, hybrid cloud complexity). Value proposition: [ADDED_VALUE] (e.g., +30% productivity, reduced vulnerabilities). CTA: [CTA_EMAIL1].

2. Email 2 - Social proof: Subject: [EMAIL_SUBJECT2]. Body: client case [CLIENT_NAME] who faced [CLIENT_PROBLEM] and achieved [CLIENT_RESULT] thanks to [IT_SERVICES_FIRM_NAME]. Short testimonial. CTA: [CTA_EMAIL2].

3. Email 3 - Urgency: Subject: [EMAIL_SUBJECT3]. Body: limited-time offer: [SPECIAL_OFFER] (e.g., free audit, personalized demo). Time constraint: [OFFER_DEADLINE]. CTA: [CTA_EMAIL3].

For each email, respect industry constraints: no unrealistic promises, mention certifications (ISO 27001, etc.), appropriate technical vocabulary (SLA, GDPR, hybrid cloud, DevOps). Body length: 80-120 words per email. End with signature including contact details of [CONTACT_NAME], [CONTACT_ROLE]. Include an optional postscript in email 3.