Got your business contacts in Gmail? Connect your Gmail account to QuickBooks to make it easy to add customers and vendors to your books.
Open A Transaction
Go to the Plus Sign Menu and choose a transaction.
Click Add New in the field at the top left of your transaction.
Connect to Gmail
On the menu that opens, choose Connect to Gmail.
When QuickBooks asks you to let it access your Gmail account, click Accept.
Now you can choose a Gmail contact as the customer or vendor on any of your transactions.