Success can be measured using various email marketing metrics:
1. Open Rate: Indicates how compelling your subject line was. 2. Click-Through Rate (CTR): Shows how many people clicked on links within your email. 3. Conversion Rate: Measures how many recipients completed a desired action. 4. Bounce Rate: Indicates the number of emails that could not be delivered. 5. Unsubscribe Rate: Shows how many recipients opted out of your email list after receiving the email.