A set of questions about a topic that’s used for research purposes. Questionnaires are commonly used in digital marketing to get feedback on user experience (UX). For example, you might send one after a customer makes a purchase to find out if they experienced any confusion during the checkout process. Marketers also commonly use questionnaires after someone unsubscribes from a newsletter or other mailing list.

Effective Email Marketing
Email marketing is quickly becoming one of the most popular forms of Internet advertising. This is because there are many distinct advantages to the concept