Frequently asked questions

SpamBarometer is a service that helps you test your emails against common spam filters to ensure they reach your recipients' inboxes. By analyzing your email content, headers, and structure, we provide a comprehensive spam score and detailed recommendations to improve deliverability.

Our spam scores are highly accurate as they are based on real-world spam filter algorithms and machine learning models trained on millions of emails. However, please note that email deliverability can vary across different email providers and individual recipient settings.

To upgrade your subscription, log in to your account, go to the "Account Settings" page, and click on "Subscription". From there, you can view available plans and complete the upgrade process.

Yes, we offer a 14-day money-back guarantee for all new subscriptions. If you're not satisfied with our service, contact our support team within 14 days of your purchase for a full refund.

Yes, you can switch between monthly and annual billing cycles. Annual subscriptions come with a discount. To change your billing cycle, go to "Account Settings" > "Subscription" and select "Change Plan".

High spam scores can be caused by various factors including spammy words in your content, poor HTML structure, missing or incorrect email headers, blacklisted sending domains or IPs, or a high image-to-text ratio. Our detailed report will help you identify and fix these issues.

If your test failed, it could be due to an invalid email format, corrupted attachments, or server issues. Try simplifying your email, removing attachments, and testing again. If the problem persists, contact our support team with the error details.

We use the emails you send only to produce your report and to help if you contact support. We never sell them or use them for marketing. We keep each email with its results so your report and email preview stay available in your test history. All connections to SpamBarometer are encrypted (HTTPS). You can ask us to delete a test, or your account and all its tests, at any time through the contact form. See our Privacy Policy for more details.

We do not share your email content or personal information with third parties except as required to provide our service (such as processing payments). We may use anonymized, aggregated data for improving our spam detection algorithms.