Question 1

How is the subject line score calculated?

Accepted Answer

The score is based on several checks, including length, wording, urgency, personalization, and spam trigger words. The tool combines these signals into a single score and also shows a category breakdown so you can see what is helping or hurting performance.

Question 2

Can the tool suggest alternative subject lines?

Accepted Answer

Yes, the tool can provide improvement tips and suggest better wording based on the issues it finds. These suggestions are meant to help you create subject lines that are clearer, more relevant, and more likely to earn opens.

Question 3

What types of spam trigger words should I avoid?

Accepted Answer

Avoid words and phrases that sound overly promotional, misleading, or too aggressive, such as guaranteed, free, urgent, act now, and limited time when they are not truly justified. The best approach is to keep the wording natural, specific, and aligned with the email content.

Question 4

Does the tool support multiple languages?

Accepted Answer

Support for multiple languages depends on how the subject line is written and how the AI interprets it. In many cases, the tool can evaluate non-English subject lines, but results may be strongest for clear, standard wording.

Question 5

How can I improve my subject line's personalization score?

Accepted Answer

Add details that make the subject line feel more relevant to the recipient, such as a name, company, location, or a context-specific reference. Keep it concise and use personalization only when it fits the message naturally, since forced personalization can reduce trust.

Email subject line tester

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