How to get spam score of the content
What is the Spam Score?
The higher the positive score is for your email, the higher the probability that the message is spam. Generally, your email should have a score of 5.0 or lower to be considered passing. The lower your score, the more likely your email is going to be received in your subscribers' inboxes.
If you have a score is more than 5 that has a probability of landing up in spam then you will get an error stating your score is not appropriate, what you can do is you can read the instructions given there, follow those and you can make your score which fits the criteria.
You would need the latest versions of the plugin installed & activated on your site to check the spam score: Email Subscribers (Pro)
Steps to Check Spam Score :
Step 1 : Go to WordPress Dashboard -> Email Subscribers -> Templates
Step 2 : Open any one of your templates.
Step 3 : On the right sidebar, Find “Get Spam Score” and click the button “Check”
Step 4 : If the SPAM score is less than the value it should be then you will receive some error message, please do the needful to fix the errors.
Step 5 : Update the template. That’s it!
Once the button is clicked, the spam score will appear.