You can easily react to a DM by clicking or tapping on the heart-plus icon that appears right next to a message. Double-tapping messages brings up the emoji panel, as well. The recipient will get a notification if you react to their DM, and they’ll get your reaction as a text reply if they’re using an older version of the app that doesn’t support the feature. Based on what we’ve seen, you can add a reaction even to years-old messages, though we’d advise against going that route to not-so-subtly remind your ex that you exist.

Say more with new emoji reactions for Direct Messages!

To add a reaction, click the ❤️➕ icon that appears when you hover over the message on web or double tap the message on mobile and select an emoji from the pop-up.

For more about DM reactions: https://t.co/sdMumGDBYl https://t.co/QxMVmGt8eY

— Twitter Support (@TwitterSupport) January 22, 2020