Excerpt from this article:
…Sure, there was a time it may have been appropriate, even cool, to tout the default “Sent from my iPhone,” a programmed plug-in (and a genius little bit of branding). But these days, that one-liner signals only one thing: bore. So instead, you must come up with something witty. “Sent from a bumpy tarmac,” you might write, followed by a custom GIF. “Envoi de mon iPhone,” if you want to be fancy (and French).
…And so goes the tyranny of judging one another by the minutiae of our email tone. I’m not just talking signoffs like “cheers” or “thanks” (which, for what it’s worth, have prompted a debate of their own). I’m talking next-level nuance: a well-placed emoji, a perfectly timed GIF; what microseconds between replies say about the sender.
“This isn’t just email, this is identity,” said Hilary Campbell, a 25-year-old cartoonist in Brooklyn. “I feel like I’m always trying to balance this sense of being a smart, sensible, reliable person who is also very FUN and quirky.”
…Research has found that when parties are getting along, they tend to mimic each other’s subtle speech patterns: “language synchrony,” as it is known. In which case, if I email with proper capitalization, and you reply with an all-lowercase email, should I be taking offense? “That’s a classic power move,” the digital strategist Victor Pineiro said. “You can’t be bothered to craft a properly capitalized email?”