Social Media and Advertising
If you have more than one list, combine all lists together for the total amount of email addresses you have.
This includes newsletters, broadcast emails, promotional emails, autoresponders, etc.
List all of the domains you own (that you can think of) starting with your primary domain.
Third Party Services and Tools
Services include MailChimp, Vimeo, Constant Contact, GoDaddy, WordPress, HubSpot, LeadPages, OctaChat, Squarespace, OntraPort, Infusionsoft, Fiverr, Google AdWords, YouTube, Facebook, LinkedIn, Twitter, Google Analytics, etc.
Click here if you're not automatically taken to part 3.