Using exclamation points in emails can make you appear friendlier and more enthusiastic, but context is key. Research from Penn State, George Washington, and USC shows that adding exclamation marks can increase positive perceptions by up to 14.8%, especially in friendly exchanges like meeting requests. However, they can backfire in analytical contexts or when asserting authority, making the sender seem less competent or powerful. In fact, participants rated senders who used exclamation points as 9.7% less powerful when discussing analytical topics. The study involved over 2,000 participants and analyzed real messages from online forums and simulated email scenarios. It highlighted a gender divide: women felt a stronger pressure to use exclamation points, while men felt they should avoid them. In informal communication, exclamation points convey excitement and warmth, but in formal contexts—like legal emails—they can diminish professionalism. Practical recommendations include using exclamation points to enhance warmth in friendly messages while steering clear of them in assertive or analytical communications. The findings suggest that simple tweaks, like using “I’m excited!” instead of “We’re excited,” can boost engagement. The research underscores the importance of adapting punctuation to fit the message and audience.