Email Spam Checker

An email spam checker is a tool that analyzes your email before sending it to identify issues that could trigger spam filters. It evaluates content, sender authentication, and technical configuration to generate a spam score and actionable recommendations.

You send a test email from your actual sending platform to a unique address. The tool analyzes your email using the same criteria as mailbox providers, including content, authentication (SPF, DKIM, DMARC), domain reputation, and link safety, then generates a detailed report.

Common causes include missing or misconfigured authentication (SPF, DKIM, DMARC), poor sender reputation, spammy email copy, broken or suspicious links, and sending to inactive or invalid email addresses.

A score of 75–100 typically indicates your email is inbox-ready with minimal spam risk. Scores between 50–74 suggest issues that should be reviewed, while scores below 50 indicate a high likelihood of landing in spam.

Start by testing your emails before sending. Ensure your authentication records are properly configured, maintain a clean email list, avoid content that triggers spam, and send only to engaged subscribers. Fixing issues identified in your spam checker report can significantly improve deliverability. For content-specific improvements, InboxAlly's free Spam Word Checker can help you identify spam words and refine your emails before sending.

Yes, InboxAlly offers a free email spam checker with no signup required. You can test your email's content, authentication, and technical setup and receive a full deliverability report in minutes.

While it does not simulate inbox placement across providers, it functions as an effective inbox placement test by identifying the factors that influence whether your emails land in the inbox or spam folder.

Yes, InboxAlly's email spam checker is designed for email marketing campaigns, including newsletters, automated sequences, and mass emails. By testing your email before sending, you can identify issues that may affect email performance, deliverability, and engagement. This helps ensure your campaigns reach more recipients and generate better results for your business.

A test completes in under 60 seconds for most senders. You send the test email from your real sending platform to the unique address the tool generates, the system parses the message immediately on receipt, and the report renders as soon as parsing finishes — typically within 30–60 seconds.

An email deliverability test analyzes one message you send for content, authentication, and reputation issues that could route it to spam. An inbox placement test sends the same message to seed addresses across Gmail, Outlook, Yahoo, and Apple Mail and reports where each one actually landed. A deliverability test tells you what is wrong with the email; an inbox placement test tells you what mailbox providers do with it. Both are useful — start with the deliverability test before bulk sends.

A clean deliverability test means the message itself is well-formed, but mailbox providers also score the sender. If your domain or IP has a poor reputation, low engagement history, or has recently been added to a blocklist, even a clean message can land in spam. Content scoring is one of five deliverability factors — sender reputation, authentication alignment, recipient engagement, and blocklist status are the others.