EMAIL MARKETING
Email Subject Analyzer
Review common subject-line signals such as length, punctuation, capitalization, promotional wording, and readability. This is a heuristic checklist—not a guaranteed spam or inbox-placement score.
Checks
How to use the email subject line analyzer
Paste a subject line to check its character count, word count, punctuation, capitalization, and common promotional wording. Use the recommendations as an editing checklist, then test the final subject with your audience and email content.
What this subject line checker can and cannot tell you
The analyzer can flag common writing and formatting patterns that may deserve review. It cannot predict whether an email will reach the inbox or be classified as spam.
Deliverability depends on more than the subject line
Sender reputation, authentication such as SPF, DKIM, and DMARC, message content, recipient engagement, sending practices, and mailbox-provider policies all affect deliverability. Treat this tool as a quick subject-line editing aid, not a spam score or inbox-placement guarantee.