Within Gator you can use custom fields such as 'First Name' and 'Company Name' which will change for each content as long as they have information in that field on their contact record.
- Within your email go to the 'Email' tab.
- Select 'Settings' next to the name of the email design.
Here you will see the email subject line.
- Select the Custom Fields dropdown.
- Select the field you want to have in your subject line, making sure your cursor is in the correct place within the subject line so the custom field is inserted to the correct position.
It will display as above.