Powerful Email Subject Lines

Do you know one of the most powerful tools to drive openings in email subject lines? Asking questions. Asking a question in your subject line piques your audience’s interest, and gives them a promise of what they will find in the body of the email. At Caliber, we’re big believers in subject line questions. This bit of advice, and 18 other best practices and great ideas for email subject lines can be found in this article from our friends at Hubspot.



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