Email Subject Line Sensitive Words Detection

Detection

The Sensitive Words Detection feature is designed to help you improve your email deliverability and open rates by identifying words in your subject line that could triggar spam filters.

Email providers like Gmail and Outlook automatically scan your email subject line and may classify your email as Inbox or Junk, depending on the wording. This directly affects whether your message gets seen — or gets filtered out. To help you avoid this, we detect words in your subject line that are likely to trigger spam filters. This helps you to optimize your subject line before sending, improving your email’s visibility and overall performance.

Our data scientists use statistical analysis to identify and collect words that are likely to trigger spam filters. This is how we build and maintain our sensitive words library. By combining this with smart detection algorithms, we’re able to scan your subject line every time you type — and notify you immediately if any sensitive words are found.

Optimization

When the system notifies you that your subject line contains sensitive words, you can decide whether to change them or not — it’s totally up to you. Our detection is meant to be a helpful reference. If you choose not to change the wording, the warning will remain, but you can still launch your campaign successfully.

However, we recommend making adjustments by adjusting the wording. Our analysis shows that sensitive words often carry a deceptive or manipulative tone, which may lead email providers to flag them as a risk to the recipient’s financial or information security. To improve your deliverability, consider using more neutral synonyms to replace those words.

If you're interested, feel free to contact the SmartLink_service@proximabeta.com to access the full sensitive words library.