Article doesn't link to any study, so I don't know the method. However, I wish email had like a feature that's something akin to the Slack reaction emojis, say

Article doesn't link to any study, so I don't know the method. However, I wish email had like a feature that's something akin to the Slack reaction emojis, say a thumbs up or something. Sometimes I've sent emails asking someone to do something, they've replied saying they've done the thing, it seems polite to say thank you but also its extending the chain further for a two word response.