Finding Junk Leads

Version 4

    Marketo has built-in spam lead filtering for leads who fill out Marketo forms on your landing pages.  However, junk leads may still get into your Lead Database.  You can use a Smart List to find these junk leads or other leads who you might not want in your database.

    Here are some examples of leads you might not want:

    • missing company name or last name
    • email address bounced
    • has a personal email address (like


    Say you want to find all leads who use a personal email address. You could build a Smart List that checks by using the Email Address and looks for leads whose email address contains a non-commercial domain:


    Common personal email domains

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    After that, it's up to you how you want to handle those leads. You could:

    • ask them to provide a commercial email address (with an email, landing page, and form)
    • stop their emails with Marketing Suspended or Blacklisted (using Change Data Value)
    • delete those leads (using Delete Lead)


    You can build similar Smart Lists to find potential junk leads such as:

    • undeliverable email addresses -- filter on Email Invalid is true
      rtaImage (1).png
    • missing a company name -- filter on Company Name is empty
      rtaImage (2).png