Handling the list responsibly.
WHAT YOU HOLD
Email addresses, names, and whatever else you collected. Possibly purchase history and engagement data.
All of it is personal data.
PRACTICAL OBLIGATIONS
Collect only what you need Say what you collect and why, in your privacy notice Keep it only while it serves a purpose Protect access to it Honour requests to see, correct or delete it
THE PLATFORM
Your subscribers' data sits with your email platform. That is a processor acting on your behalf.
Mention it in your privacy notice.
SECURITY
Two-factor authentication on the platform account Access only for people who need it Exported lists stored securely, never on the hosting account and never in a web-reachable folder
An exported list in a public folder can be taken by anyone who guesses the URL.
DELETION REQUESTS
If someone asks to be removed entirely, remove them rather than merely unsubscribing.
Keep a suppression record so they are not re-added by a later import.
FOR SPECIFICS
Visit zillionkinghost.com for further information, and take proper advice on what applies.