Subject Line Tester

Test your email subject lines before you send them.
We check everything that can potentially send your email to spam from spam words to excess number usage.

Name Results
Word Count
Character Count
Number Count
Spam Check

Word Count

The ideal word count for any email subject line is 6 or less. If you are able to keep your subject line to this, you will see higher open rates.

Character Count

It's recommended to keep your email subject line below 40 characters. This ensures that the entire Subject Line will be displayed even on the smallest mobile devices. You can go above 40, but it's not recommended.

Number Count

Adding Numbers makes your subject line stand out, we recommend adding some numbers to make your email subject line stand out.