Message Effects.

Message Effects. In 1-on-1 chats, you can add animated effects to messages that play when the recipient opens the chat.

All users have access to free effects like ❤️👍🔥🎉 and Telegram Premium unlocks hundreds more – including all the effects from Premium Stickers.

To add an effect, press and hold the Send arrow – messages with effects can also be scheduled or sent without sound.