Readers need to see someone familiar in the “from” line, and that might not be your name. The decision to open an email is made in a split second, and you want to do everything possible to make them “click”. Unless your name is well known, you might be better off using your broker’s business name. So instead of using “Bob Realtor” in the from line you would use “Excellent Realty”.
The only way to know for sure is to test it. Send one group of emails using your name and another using your company name. Then monitor the number of “opens” through your email service. You’ll quickly know whether your name or your company’s name is most effective.