You can use the website "mail-tester.com"

All you have to do is, send a test email on the email ID provided in the website. Check the screenshot for reference (don't send to the email address present in the screenshot)

Copy the email address and then send a test email from your sequence to the email address you get here. After that, click on "Check your score" to know the email score of your email content and your sender email account.