Mixpanel automatically creates a "Message Sent" event which you can filter by several properties including:
- Message: The name you've given the Message
- Message Type: Email, SMS, Push, Webhook, or In-app
- Variant (if A/B testing): Original variant, Variation 1, etc.
Use Explore to discover the users that received messages. Filter the "Message Sent" event by any Variation using the "+" button