If you the author are emailing an audience member (from your email account) and you'd like to add this person to your character's mailing list, you can BCC the character and the person you're emailing will be added.
Note that the audience member is ignored in terms of trigger processing and will not activate any beats.
Your email address will however. If you don’t want to trigger any beats then consider creating a client partition for just you and set it to Inactive. All emails from you will then always be ignored. Note that this could be a problem when testing so don’t forget if you do this.