In this research method, questionnaires are sent by mail to respondents. They are ideal for studies where simple close-ended questions will provide the information needed. If there are many open-ended questions that need probing, a telephone survey may be a better option.
Mail surveys are typically chosen when the client feels it is necessary to provide all potential respondents with the opportunity to participate in the research.
Like telephone and online surveys, mail surveys require detailed attention to questionnaire design. Wording and question order have a huge influence on the results. We are careful to remove bias and consider subtle wording nuances throughout the questionnaire. Appearance of the questionnaire is also optimized.