This email address should be the specific individual that the email is going to come from, or a list that will forward to a small group. While the vast majority of respondents will click through the survey, some respondents like to send additional comments back via email.
We strongly recommend your email to show as coming from an individual (CEO, Founder, Head of Marketing, Support, etc.). This personal touch goes a long way to ensure you receive a high response rate. No one is inclined to fill out a survey when the email address is a "firstname.lastname@example.org".
Your subject should be short, concise, and highlight the company or brand. A few examples:
Two Important Questions From <company>
Have 60 seconds? Give <company> Some Feedback
Let <company> Know How You Feel
Would You Recommend <company> To A Friend or Colleague?
<company> Values Your Feedback
This is optional but we recommend a very brief intro to set the context for the survey. You may mention how brief the survey will be, that each comment will be read, and that feedback will directly impact improvements to the business. Don't attempt to frame the question or state anything that may influence an artificial score.