Five S's can guide you in writing goodwill messages:  selfless, specific, sincere, spontaneous, and _____________________.

Goodwill Messages

Communications that express thanks, congratulations, or other positive sentiments, intended to build good relationships and positive impressions.

Five S's

Refers to five Japanese terms beginning with 'S' used to create a workplace conducive to organizational and visual harmony: Seiri (sort), Seiton (set in order), Seiso (shine), Seiketsu (standardize), and Shitsuke (sustain).