Now, I'm all for branding - if you can do it successfully. But if I've bought something from you, I will probably recognize your name, not your brand. And it's really why I stay on your list(s) - I know you, and there are occasions that I like what you have to say.
On the other hand, if you send me an email that has 'firstname.lastname@example.org' as the reply-to address and you sign off at the bottom as:
To your success!
The Support Team
I'm going to find the unsubscribe link immediately - because I have no earthly idea who the hell 'The Support Team' is. Nor do I have time to find out. So, bye bye.
Fancy team names and branding names and little tactics that you think help make you look more important than you really are just put me off.
Be yourself, let me know in the email who you are. Your thoughts and ideas are what interested me in the first place, and who knows? - you may sell me something else in the future.