Here is a version that hits your 55–85 word requirement while keeping the tone...

https://abigailsultimatecolumns.lowescouponn.com/how-to-write-social-proof-notifications-that-don-t-sound-like-marketing-fluff

Here is a version that hits your 55–85 word requirement while keeping the tone punchy and focused on the value proposition: **Cue by The Trustmaker helps new SaaS teams build immediate credibility