Edit templates for transactional emails

I am using the new Members functionality on a small personal blog, so no payments or anything. It’s just a way for visitors to get posts delivered to their email boxes instead of visiting the website, if they prefer. So that’s working great!

However the templates for the transactional emails are a bit weird. I would like to customize these templates. Is that possible?

For example, the default messages are signed by “The team at Luke Cyca” which gives people the wrong idea. I am just a person. I don’t have a team. Nor do I wish to pretend that I have a team as that’s not consistent with the “brand” I’m trying to project.