1. Paste a long thread (remove names/amounts) and ask: 'Summarise what is being asked of me, then draft a reply that answers each point in under 150 words.'
2. Paste your draft and ask: 'Make this more polite but firm; keep all facts.'
3. Difficult message: 'Draft an email declining a discount request from a good customer, offering faster delivery instead.'
4. Translate a reply into Hindi and back to check meaning.