Use emoji reactions

Emoji reactions are a quick way to respond to messages in Slack. They're both fun and helpful for getting work done – a simple reaction can often replace the need for a follow-up message.

What to expect

  • One person can add up to 23 emoji reactions to a message and the maximum number of reactions on a message is 50.
  • Any reactions that you add will be highlighted in blue.
  • To see who’s reacted to a message, hover over or tap and hold the reaction.

Add or remove a reaction

Add a reaction



  1. Hover over the message that you’d like to add a reaction to.
  2. Select a reaction or click the  Add reaction icon to find another option.
  1. Tap and hold the message that you'd like to add a reaction to.
  2. Choose from your most frequently used reactions at the top of the menu, or press the   Add reaction icon to add a different one.

Remove a reaction

If you’d like to remove a reaction that you’ve added, simply click or press the reaction from the message. Bear in mind that you can’t remove reactions that other people have added.

View all reactions to your messages



  1. Click on  Mentions & reactions at the top of your left sidebar. If you don't see this option, click on  More to find it.
  2. Scroll through the list to see reactions to your messages.

Tip: When someone reacts to one of your messages, you'll see the emoji momentarily appear next to Mentions & reactions in your left sidebar. 

  1. Tap the  Mentions tab at the bottom of the screen.
  2. Scroll through the list to see reactions to your messages.

Set preferences for one-click emoji reactions

One-click emoji reactions let you respond to messages in Slack almost instantly – simply hover over a message and choose from three emoji options. Owners and admins can choose default one-click reactions that you see, but you can customise them using the steps below.

  1. From your desktop, click on your profile picture in the top right.
  2. Select Preferences from the menu.
  3. Select Messages & media.
  4. Under Emoji, tick or untick the box next to Show one-click reactions on messages. If it’s ticked, click on the boxes to select emoji for one-click reactions.
  5. Click on the  close icon when you've finished.