By adding 'via Starred', we want to let the respondent (your contact) know that the feedback form and all data is sent via a reliable and safe platform, the Starred platform!
Do you prefer not having 'via Starred' as addition to the sender? This is easily changed into your own company name! When you go to your Company settings, and go to Company Details, you can change this. By scrolling down you will find the option "From name suffix".
Note that this text is visible behind the sender of the invitation e-mail. So when your contact receives an e-mail from the above example, the sender will be: "[name sender] - Starred". When nothing is filled in, the "via Starred" will automatically appear. So it's good to change this into your own company name.