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The customer support glossary, plainly defined

Thirty terms you meet running a shared inbox — each with a definition you can quote and, where one exists, the formula.

What this covers

This customer support glossary defines 30 terms teams meet when they run a shared inbox or help desk — satisfaction metrics like CSAT and NPS, operational terms like triage, escalation and SLA, and newer AI concepts like human-in-the-loop and intent detection. Each entry gives a plain definition, the formula where one exists, and how to apply the term in practice.

No entry ends in a sales pitch. Where a term maps to something inrelay ships, the entry links it once and moves on; where honest public benchmarks exist, they are cited with a date, and where they don’t, no numbers are invented.

01 · Metrics & targets

Metrics and targets.

The numbers support teams are measured by — and how each one can be misread.

02 · Operations

Running the inbox.

The working vocabulary of queues, ownership and hand-offs.

03 · Concepts & AI

Concepts and AI.

Self-service, and the newer vocabulary of AI in the inbox.

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Glossary questions.

How is each glossary entry structured?
Every entry follows the same shape: a definition short enough to quote, how the concept works in practice, why it matters, and how to measure or apply it — with the formula spelled out for numeric terms like CSAT or FCR.
Do the entries include industry benchmarks?
Only when a public source with a date exists — the NPS entry cites the 2003 Harvard Business Review research that introduced the metric, for example. Where credible benchmarks don’t exist, the section is omitted rather than filled with invented numbers.
Where do these terms show up in inrelay?
Most of the operational vocabulary maps to shipped features: triage to triage & routing, CSAT to CSAT surveys, deflection to the knowledge base. Entries link the relevant page once, where it genuinely helps.

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