NPS categorises respondents as Promoters (9–10), Passives (7–8), and Detractors (0–6). The score is calculated as: % Promoters minus % Detractors, ranging from -100 to +100. NPS is typically collected periodically (quarterly or annually) rather than after individual interactions.
InboxCentral supports NPS surveys alongside CSAT and CES, with automatic scheduling, multi-channel delivery, and trend analytics.