Find out how your message’s subject line is likely to influence message performance. Test the performance of a single message or compare up to 10 subject lines.
Einstein evaluates the subject lines as they appear in your subscriber’s inbox, and tests the subject line for potential bias.
Interpreting Test Results
To help you understand how the predicted performance compares to your own past performance in a business unit, contextual analytics appear.
- On the Einstein Copy Insights dashboard, enter a subject line with up to 80 characters in the Performance Tester input field.
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Click Test.
The Einstein performance prediction and contextual analytics appear, indicating a predicted engagement rate range, most likely engagement rate, and past performance.
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To see a new prediction, modify the subject line and click
Test.
Contextual analytics appear to help you understand how the predicted performance compares to your own past performance within a business unit.
Graphic Indicator Engagement Rate Factor Description Purple dotted line Average Engagement Rate Unweighted 90-day average engagement rate (engagement rate mean) of all commercial sends to at least 30 recipients in your business unit Amber shaded area Predicted Engagement Rate Range Distribution of possible engagement rates based on your past sends, global data, and the Einstein model’s confidence for your enterprise (EID) Amber dotted line Predicted Engagement Rate Predicted most likely engagement rate Blue lines Other subject lines and subject line groups Performance distribution for subject lines or subject lines groups from the past 90 days After the contextual analytics, the most impactful language factors appear and show how much they influence the prediction. Use these factors to adjust your subject lines.
Important Predicted performance factors and guidance are unique for each subject line that you test. Don't generalize the guidance or use it as a standard for best practices.These factors are used to measure subject line performance. We show the top five most impactful factors for each tested subject line.
- Number of numeric symbols
- Number of emoji symbols
- Ratio of uppercase characters
- How unique and original the subject line is
- Number of question marks
- Number of exclamation marks
- Number of dollar symbols
- Number of percentage symbols
- Number of time-sensitive words and phrases
- The degree of personalization
- Word count
- Character length
- Contains specific keywords