Unfortunately there’s a bit of knowing your audience because you can’t really control the tone of voice inside your recipients head. To anyone who’s Millennial or younger the one with the period is straight up aggressive.

For generations that grew up as text as the primary form of communication we had to figure out how to convey tone and writing style and emojis is what we had. Tone and the expression of tone are disconnected even when speaking in person and have grammar like rules.