Q: Can the retails shops or any store retrieve our email ID’s with the help of credit card details (I never gave my email address but they send me invoices/receipts to my email address)?
A: Of course! Not that the stores themselves can directly make the connection between your credit card and email address, but there are many companies out there whose sole purpose is to connect the dots from scraps of data to come up with a comprehensive inventory for all that makes you, you.
And this includes your email address, the websites you visit, which ads you click, how much time you spent on each web page, who your friends are, where you use your credit cards, your income, your sexual preferences, you name it.
Install Ghostery on your browser to see all the companies that are tracking you, and block those buggers.
Original Post: https://www.quora.com/Can-the-retails-shops-or-any-store-retrieve-our-email-IDs-with-the-help-of-credit-card-details-I-never-gave-my-email-address-but-they-send-me-invoices-receipts-to-my-email-address/answer/Marc-Mintz-4