Emoji are creative emotion-conveying graphics that you can insert into text. While less common in email marketing, they can be very effective if you use them with proper consideration.
Blueshift currently supports up to Unicode Version 5.2. However, any standard byte size emoji (4 bytes or less), regardless of the Unicode version, should work.
Here are few resources available to copy and paste emojis into your email (not currently available for push)
Emojis do not render in all email clients. Always test to see if the emoji are properly inserted in various clients, and know which ones are the most commonly used by your target audience.
If the symbol is not supported by the email client, recipients will typically see a little box character instead - ☐ .