Email subject line tester

Optimize your email subject line based on data-science drawn from 100s of millions of B2B emails

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Overall results

+40%
Overall, this is a great email subject line! You should expect 40% more replies than the average B2B email.

Structure suggestions

-12%
Word Count: Your subject line uses two words. Emails with one word subject lines have the highest reply rates.
1.4x
Character Count: Your subject line has 16 characters. Emails with 20 characters subject lines have the highest reply rates.
1.4x
Case: Your subject line appears to use Sentence Case. Subject lines written in the Title Case have the highest reply rates.
1.4x
Reading Level: Your subject line has a 4th grade reading level. Emails with subject line at the 3rd grade have the highest reply rates.
1.4x
Sentiment: Your subject line has a positive sentiment. Subject lines written in a neutral tone have the highest reply rates.

Content suggestions

1.4x
SalesLoft: Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
1.4x
SalesLoft: Lorem ipsum dolor sit amet, consectetur adipisicing elit
1.4x
SalesLoft: Lorem ipsum dolor sit amet, consectetur adipisicing elit
1.4x
SalesLoft: Lorem ipsum dolor sit amet, consectetur adipisicing elit