Subject Lines & Deliverability

Summary

A compelling subject line gets the email opened; good deliverability (not landing in spam) ensures it's even seen — both require deliberate practice and technical hygiene.

• 1Write 5 subject line variations for the same hypothetical email.
• 2Learn the basic technical factors affecting deliverability (sender reputation, spam trigger words).
• 3Understand why buying email lists destroys both deliverability and trust.