I wrote a post on my discourse to introduce the emoji “skin tones” and added a string of emojis to the end of the title to make it glaringly obvious what I was talking about.
Here’s how it looks in the email summaries - note the first two are just blue squares, and the last one is a pink square followed by … I suspect the last one got truncated part of the way through the emoji code. (which I suspect is hard to avoid given how short the title can be before it is truncated. An issue I’ve lamented elsewhere)
Here’s the same topic on my discourse - note emojis
And, as I write this post I noticed that oneboxing appears to have a similar issue with emojis in titles