About the Spam Checker Filter

The Spam Checker filter, located on the Filters section of the Sendgrid website is useful when your web application allows your end users to create content that is then emailed through your SendGrid account.  Since emailing user generated content is hard to monitor and can often be abused by spammers, the Spam Checker filter can provide notification when emails are detected that exceed a predefined spam threshold.

Using the Spam Checker Filter

The spam checker filter is enabled by dragging the filter into the right column of enabled filters. Once enabled, you can click on settings to define the Spam Threshold and URL to post spam messages parameters:

Spam Threshold: Emails with a spam score over this value will be considered spam and will not be delivered to the recipient. If the URL to post spam messages is provided we will POST a notification message to this URL (see HTTP POST details below).The default spam threshold is 5.0, but you can set this to any value you wish. We use SpamAssassin to process the spam checks for this filter, so you can base your Spam Threshold setting on values typically used with SpamAssassin

URL to post spam messages (optional): SendGrid will send a HTTP POST request when it detects emails that are considered spam.

HTTP POST details

The HTTP POST request that you receive at the designated URL will contain the following two parameters:

1. email - The contents of the email
2. report - The detailed SpamAssassin report describing why the email was designated as spam.