When you connect your QuickBooks Online account with Mailchimp, you can sync your marketing and financial data to the Mailchimp audience you choose. Your QuickBooks Online customer information, including email address, name, physical address, purchase history syncs to Mailchimp as contacts in the audience. These new contacts get tagged as imported from QuickBooks Online which makes it easier to identify them for your targeted marketing efforts. Then, you can use everything you know about these contacts to create segments and send targeted, personalized campaigns.