You can add emoji emoticons to the title or the body of your iOS, Android, Windows or web push notifications.
If you want to insert an emoji in your message you can:
Chrome 68+: Right-click any text field and select "Emoji" or "Emoji & Symbols".
Mac: Press CTRL + CMD + Space to display the emoji keyboard and pick an emoji.
Everywhere: Copy emojis from Emojipedia (https://emojipedia.org/) and paste it in your message
Firefox extension: Use the emoji cheat sheet https://addons.mozilla.org/en-US/firefox/addon/emoji-cheatsheet/
Chrome extension: You can use a third-party extension like Emoji Keyboard by EmojiOne https://chrome.google.com/webstore/detail/emoji-keyboard-by-emojion/ipdjnhgkpapgippgcgkfcbpdpcgifncb
🚧 Important note
On Android, emojis may look different on your users' devices:
Android 4.4: On Android versions before 4.4, emoji emoticons might not be displayed correctly.