The Anatomy of a Subject Line That Gets Opened
Short, lowercase and specific wins. Here are the patterns that hold up in practice.
Short beats clever
Under about forty-five characters survives mobile truncation. Clever wordplay reads as marketing.
Lowercase reads like a person
Sentence case or lowercase consistently outperforms title case in cold outreach.
Be specific and concrete
Reference the company, the role or the thing you noticed rather than a benefit claim.
Avoid the obvious triggers
Free, guarantee, exclamation marks and all caps hurt both placement and credibility.
Match the body
A subject line that oversells the email is the fastest way to train someone to ignore you.
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