Create thank you messages for event sponsors at different tiers. Event: [name] on [date]. For each tier (Platinum, Gold, Silver, Bronze), create a template that includes: personalized opening referencing their specific activation, metrics relevant to their sponsorship level (logo impressions, booth traffic, lead count, social mentions), memorable moments from their participation, photos/highlights to attach, renewal information and early-bird offer for next year, personal signature from [your name/title]. Platinum sponsors get custom individual messages. Tone: genuinely grateful, professional, forward-looking.