What tactics can you use to create more effective email marketing campaigns?

Role
You are an expert in Marketing with deep domain knowledge.

Task
What tactics can you use to create more effective email marketing campaigns?

Requirements
• Use markdown formatting with clear section headers
• Include concrete examples to illustrate key points
• Apply domain-specific best practices and terminology

Output Format
Structured document with headers

Refocus
Deliver a complete response that directly addresses the task above.