Email Service Integration Overview Transactional emails — order confirmations, shipping notifications, password resets, and account alerts — are critical customer touchpoints that must arrive instantly and reliably. This skill covers setting up email delivery on each platform and integrating dedicated transactional services (SendGrid, Amazon SES, Postmark) with SPF/DKIM/DMARC DNS records for deliverability, reusable templates, and bounce/complaint handling. When to Use This Skill - When setting up transactional email for a new e-commerce store - When emails are landing in spam due to missing…