Spam Uniform Resource Identifier Real-Time Block List (SURBL)

What is Spam Uniform Resource Identifier Real-Time Block List (SURBL)?

This refers to the list of websites found in unsolicited messages. While most lists contain message senders, SURBLs do not.

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• Bulk Folder
• Abuse Emails
• Confirmed Opt-In
• Footer
• Bounce Rate
• Conversion Rate
• IP Address
• Simple Mail Transfer Protocol (SMTP)