Also useful if you have a rare "duplicate" in your account and need to remedy.
Step 1:
To fully delete a profile from your Gatsby account, that profile must first be "archived". The following video shows how to archive a profile as well.
Step 2:
Once archived, head into the Archived table, select the checkbox next to that profile, and click "delete".
Deleting a profile is permanent and can not be undone.
Video Example:
The following video walks through archiving, deleting, and editing email addresses to remedy some duplication scenarios: