To emoji or not to emoji?

You should know, to start with, that I’m a hard-ass about most things when it comes to business writing:

• The phrase “I trust this email finds you well” (I hate it)
• The incorrect use of the verb “revert” (this makes me itch)
• Two spaces after a full stop (which should’ve vanished when women got the vote).

But, in a development that surprises many people, I’m no hard-ass when it comes to emojis.