Add Note About Emoji Availability

Author: pwseg

src/engage/campaigns/index.md

@@ -14,6 +14,7 @@ Use real-time data and unified customer profiles to send personalized messages t
 Use Engage to send [email](/docs/engage/campaigns/email-campaigns/) and [SMS campaigns](/docs/engage/campaigns/sms-campaigns/) in Journeys:
 - Send email and SMS messages to subscribed users as a step in a Journey.
 - Insert real-time profile traits from merge tags to personalize messages.
+- Add emojis to customize and add creativity to your campaigns.
 - Test your email and SMS before you include them in campaigns.
 
 ## Build email and SMS templates