Why Emails Go to Spam

Spam placement can reflect authentication, reputation, engagement, content patterns, list quality or a combination of factors.

What to focus on

• Check authentication
• Review complaint and bounce patterns
• Remove invalid addresses
• Inspect acquisition sources
• Avoid abrupt volume changes

Think systemically

Do not assume a single word in the subject line caused the problem; diagnose the whole sending system.

For the broader operating system, see email marketing best practices and software selection.