Free Email Spam Score Tester - Check Before You Send
Paste your email subject and body to instantly check for spam trigger words, formatting issues, and deliverability red flags. Fix problems before they reach a spam filter.
Free, no signup required. Results are instant and never stored.
Send Spam-Free Campaigns That Land in the Inbox
Mailmark gives you built-in deliverability monitoring, domain authentication, and inbox warming so your emails reach the inbox every time. All powered by AWS SES.
Get Started FreeFrequently Asked Questions
What triggers spam filters?
Spam filters look at multiple signals: trigger words (FREE, ACT NOW), excessive capitalization, too many links, missing unsubscribe links, poor sender reputation, and lack of authentication (SPF/DKIM/DMARC). A single issue rarely causes problems, but multiple red flags together will land you in spam.
How accurate is this spam score?
This tool checks your email content against the most common spam filter rules. However, deliverability also depends on your sender reputation, domain authentication, and recipient engagement history. Use this alongside our Email Deliverability Checker for a complete picture.
What is a good spam score?
Aim for 80 or above. Scores between 50-79 mean your email has some issues that could hurt deliverability. Below 50 means your email has major spam signals and is likely to be filtered.
Do personalization tokens help deliverability?
Yes. Personalized emails (using the recipient's name, company, etc.) see higher open and reply rates. Email providers track engagement, so higher engagement improves your sender reputation over time.
Should I always include an unsubscribe link?
Yes, for any bulk or marketing email. It is required by CAN-SPAM (US), GDPR (EU), and CASL (Canada). Even for cold outreach, including an unsubscribe option is a positive signal to spam filters and shows professionalism.