Firm Logo - Best Practices

I'm not the most tech savvy person, but I do know some obvious red flags when trying to detect Spam messages. One of those red flags are the presence of logos or graphics that look imperfect in some way.

My firm logo has rounded corners and I'm not sure how to best showcase this on the client facing e-mails and portals so that it looks normal. I've tried to convert the logo into a PNG file and makes it worse. 

Below is the very simple logo / text we're using. I'm open to suggestions so that it doesn't appear as a box within a box on e-mails and client facing headers.