Click-to-Open Rate (CTOR) is a metric used in email marketing to measure the effectiveness of an email campaign in terms of engagement. It is calculated by dividing the number of unique clicks by the number of unique opens, then multiplying by 100 to get a percentage. CTOR provides insight into how compelling the email content is to those who have opened it, as it reflects the proportion of recipients who clicked on a link after opening the email. Unlike the Click-Through Rate (CTR), which measures clicks against the total number of emails sent, CTOR focuses on the interaction of those who have already shown interest by opening the email. A higher CTOR indicates that the content and call-to-action within the email are resonating well with the audience, while a lower CTOR may suggest that the content is not engaging or relevant enough. This metric helps marketers refine their content strategy, improve email design, and enhance the overall effectiveness of their campaigns by understanding what drives recipients to take action.
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