The pre-header, or second subject line, critically impacts opens. Using specific continuation words like "and," "but," or "plus" at the beginning of the pre-header compels the reader to continue from the subject line, which can lift open rates by a significant margin.

A great cold email is judged on three criteria: 1) Packaging (subject line and preview text), 2) Body (personalization, problem/solution language, and social proof), and 3) Style (personal flair, formatting, and length). Mastering all three is key to getting replies.

Sending all communications—promotions, newsletters, and invites—from the identical sender name trains subscribers to gloss over your emails. By varying the "from name" based on content, you break the pattern, avoid becoming inbox "wallpaper," and signal that a specific message is noteworthy.

Many marketers mistakenly summarize their entire email in the subject line, removing any incentive to open it. To increase curiosity, provide only a hint or a compelling data point from the email's content. This creates an information gap that subscribers feel compelled to close by clicking.

The email preheader is crucial for engagement. Beginning this preview text with a 'continuation word' like 'and,' 'but,' or 'plus' creates a cognitive link to the subject line. This simple linguistic trick encourages the reader's eye to keep moving and significantly lifts open rates.

Stop trying to convert customers directly within an email. An email's primary function is to provide enough evidence and intrigue to earn a click through to a dedicated sales page. The sales page, not the email, is responsible for the final conversion. This shift makes copy more conversational and less pushy.

Data from Subjectline.com reveals a powerful, simple tactic for email marketing. Using a "continuation pre-header" that begins with "and," "but," or "plus" creates a narrative link to the subject line, sparking curiosity and significantly boosting open rates. This is an easy-to-implement test for any campaign.

The pre-header, or second subject line, has a major impact on open rates. Using continuation words like "and," "but," or "plus" at the beginning of the pre-header encourages the reader to continue from the subject line, which can result in a significant open rate lift of up to 10%.

Many marketers mistakenly reveal the entire value of an email in the subject line, killing any reason to open it. To maximize opens, provide a compelling hint or create a curiosity gap rather than giving away the full story.