Yes, your email address can be updated via your Medcast account. 

To update your details, kindly follow these steps:

1. Login
2. Click on your initials (top-right of page)
3. Select "Change email"  
4. Follow the prompts to update your email address

OR

1. Login
2. Click on your initials (top-right of page)
3. Select "My Profile"
4. Click on "Change email" icon above your email address 
5. Follow the prompts to update your email address