@Timothy Fong44, if you have done the settings for the Sendgrid app on your community, you should not have Tribe branding on your community emails anymore. You will have the branding of the account you have on Sendgrid.
However, you cannot customize the text for the email notification, and we have no plans to give this option as this is technically not sensible.
On all Tribe communities, if someone has "liked" your post, you will receive this notification:
<User A liked your questions "how to create community">.
This text will be generated by Tribe and you cannot replace this text with something else.