You know your Contacts best - that's why we give you full control over how often you will be reaching out to them. The Global Contact Rule (found at the bottom of your Send page (paper airplane icon), is the tool that determines how frequently a Contact will be sent a survey.
The default setting is 180 days (6 months), which means that if someone is surveyed today, the earliest they will receive a survey is 6 months from now. To be configured per NPS best practices, we encourage you to set this to a 90 day cadence. We expect a 20-25% response rate, so surveying 4 times a year gives you 4 bites at the apple.
Then, use a Send Scheduler on your Send page to send out a set amount of surveys every day. By regularly surveying your contacts with the help of the Global Contact Rule, you won't bombard anyone while giving yourself the chance to manage each response effectively and collect actionable data so your team can start to anticipate trends and themes affecting your Customer Experience.