I wish there was an ACK symbol in the Unicode emoji set, for slapping a “I receive and comprehend your message” reaction on a text. “👍” implies more assent or agreement than I necessarily want, and “🆗” often seems sarcastic outside of certain specific contexts.

Hello, what’s this: ␆ Why, it’s Unicode symbol U+2406, “SYMBOL FOR ACKNOWLEDGE”. Gee, not very legible in most typefaces, is it. When I just now texted it to a friend, they read it as a somewhat misshapen 💤 emoji. On my Mac it renders as a microscopic, horizontally arranged “ACK”, like Cathy might emit if she just fell down a well.

No matter! It’s going right in my Character Viewer favorites list, which I didn’t know I had, and which only has one other thing on it, which is ★, U+272D “BLACK STAR”, and which I bet I “favorited” in January 2016.