The Spam Check provides a detailed analysis across multiple categories based on more than 150 checkpoints, giving you an overall deliverability score out of 100.
A deliverability score above 80 is considered good, meaning your emails are likely to land in the primary inbox.
A score below 55 indicates that immediate action is required to fix email deliverability issues.
Below is an explanation of each category checked by Mailpool.
Domain Blacklist Check
The system checks your domain against multiple blacklist providers to ensure it isn’t listed as a source of spam.
Possible statuses:
GOOD – No blacklisting issues
WARN – Partial blacklisting detected
BAD – Serious blacklisting issues
If your domain is blacklisted, you should contact the blacklist provider to request delisting.
IP Blacklist Check
The system checks your sending IP against multiple blacklist providers to ensure it isn’t listed as a source of spam.
Possible statuses:
GOOD – No blacklisting issues
WARN – Partial blacklisting detected (requires attention)
BAD – Serious blacklisting issues
If your sending IP is blacklisted, you should contact the blacklist provider to request delisting.
SpamAssassin Check
SpamAssassin is an open-source anti-spam platform that evaluates multiple factors to determine an email’s trustworthiness.
SpamAssassin score interpretation:
Below 5.0 (or negative scores) – The email is likely legitimate.
5.0 or higher – The email is considered spam.
10+ – The email is very likely spam.
If your SpamAssassin score exceeds 5.0, we recommend contacting our email deliverability team to assess your options.
SPF Check
SPF (Sender Policy Framework) is an email authentication protocol that defines which mail servers are authorized to send emails on behalf of your domain.
Possible statuses:
GOOD – SPF is properly set up
BAD – SPF is not properly set up
If your SPF record isn’t properly configured, we recommend editing it or using Mailpool to register your domain, as we handle SPF setup automatically.
DKIM Check
DKIM (DomainKeys Identified Mail) is an email authentication protocol that attaches a digital signature to the email header.
Possible statuses:
GOOD – DKIM is properly set up
BAD – DKIM is not properly set up
If your DKIM record isn’t properly configured, we recommend editing it or using Mailpool, where we handle DKIM setup automatically.
DMARC Check
DMARC (Domain-based Message Authentication, Reporting & Conformance) helps prevent domain spoofing by using SPF and DKIM.
Possible statuses:
GOOD – DMARC is properly set up
BAD – DMARC is not properly set up
If your DMARC record isn’t properly configured, we recommend editing it or using Mailpool, where we handle DMARC setup automatically.
Reverse DNS Check
Reverse DNS (rDNS) verifies that an IP address corresponds to a valid domain name.
Possible statuses:
GOOD – The rDNS check has been successful
BAD – The rDNS check failed
If the rDNS check fails, contact our email deliverability team for assistance.
Domain Age Check
Older domains generally show better deliverability than newly registered ones. However, recent studies indicate that a properly configured domain can achieve good deliverability regardless of age.
Possible statuses:
GOOD – Domain is older than 6 months
BAD – Domain is less than 6 months old
While domain age has minimal impact on deliverability, ensure that all other checks are positive.
Broken Links Check
A broken link (or dead link) is a hyperlink that no longer works and leads to a 404 error page. Broken links negatively impact deliverability.
Possible statuses:
GOOD – No broken links found in your email
BAD – At least one broken link was found in your email
If the Broken Links Check fails, review the URLs in your email, update them, and rerun the Spam Check.
Short URL Check
A short URL is a compressed version of a link that still redirects users to the original page (e.g., Bitly links). Using short URLs in emails negatively affects deliverability.
Possible statuses:
GOOD – No short URLs found in your email
BAD – At least one short URL was found in your email
If the Short URL Check fails, review and replace the shortened URLs, then rerun the Spam Check.
Need assistance? Our support team is readily available via our live chat to help with any questions or concerns regarding spam checks and email deliverability.