There are many ways to collect data from the users, which can be used for research and come up with better ways to make good products and value add to the services.
Some common methods are with the average costs
|User interviews||50 per user|
The methodology that we can follow are illustrated in the below table.
|Design Methodology||Goal clarification|
|Overall study design|
|Determine feasibility||Infrastructure analysis|
|Develop instruments||Cover letter design|
|Gentle reminder design|
|Select sample||Selecting the sample|
|Conduct pilot test||Sending pre-notification|
|Conduct pilot test|
|Revise instruments||Revise questionnaire|
|Conduct research||Send Questionnaire|
|Attempts to get non-respondents|
|Analyze Data||Editing the data and|
coding open-ended questions
|Analyzing the data|
|Report preparation||Preparing the report|
|Report presentation||Sending the report|
|Walkthrough of the report|
I hope the above table will help you to scope the work and plan a good e-mail survey.