When one of my Slack messages receives an emoji reaction, where can I see when the emoji reaction was sent?

Question

My Slack messages sometime receive emoji reactions. When one of my Slack messages receives an emoji reaction, where can I see when the emoji reaction was sent?

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Example of emoji reaction:

Mouse over doesn't show any timestamps:

Answer 1

Currently, it is not possible to see when the emoji reaction was sent when one of one's Slack messages receives an emoji reaction in the default Slack UI using only built-in Slack features.

However, as Reddit user andrewfromx told me, the Slack API does have the timestamp. From https://api.slack.com/events/reaction_added:

{
    "type": "reaction_added",
    "user": "U123ABC456",
    "reaction": "thumbsup",
    "item_user": "U222222222",
    "item": {
        "type": "message",
        "channel": "C123ABC456",
        "ts": "1360782400.498405"
    },
    "event_ts": "1360782804.083113"
}

Reddit user andrewfromx pointed me to some application that displays the timestamp.

Answer 2

The @Mentions & reactions view definitely tabulates all the emoji reactions with responses looking like UserX reacted to your message. But the times showing up in that view don't appear to be the time of the emoji but rather the time of the message. Given your API finding it looks like there's a differentiation of ts vs event_ts so it appears the UI just ignores it with the current design.

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