Change my default email

Hi,

I am new to Microsoft Forms. I have made a customer survey that I need to send out do my customer email list.

When I select the "Share" option then "Anyone can respond" I then select "email"

However

For some reason it switches over to my personal Gmail account and wants to send the survey via Gmail, which I do not at all wish to do. I do not understand why if I am under my office 365 work account, it switches to try to send the survey via Gmail. How do I change that, and have the survey come from my work email, to which all of my customers will know.

Thank you