Marketing database: who you may contact, and on what basis

A marketing database is the set of people you are permitted to contact with marketing, along with what you know about them and what they agreed to. That last clause is what makes it a different object from your customer database: a customer record answers who bought what, and a marketing record answers whether you may send them anything and on what basis.

Teams that merge the two end up in a familiar mess — a single list containing customers who opted in, event attendees who left a business card, purchased contacts nobody can account for, and people who unsubscribed two years ago. Sending to that list works until somebody asks a question you cannot answer, and by then the answer is in nobody's control.

What a marketing record needs

• The basis on which you hold them: they signed up, they bought something, they attended an event, they were on a list you acquired. Recorded per person, not assumed for the list.
• The date and the source, specifically enough to reconstruct the moment — which form, which event, which import.
• What they agreed to receive. Newsletter and product announcements are not automatically the same permission.
• A suppression flag that survives everything. Unsubscribes must outlive imports, merges and platform migrations, and this is where most re-contact accidents come from.
• Engagement recency. Not to score people, but to stop mailing addresses that have ignored you for two years — the fastest way to damage deliverability.
• Segment attributes you will actually use. Three that drive real decisions beat thirty that decorate a dashboard.

Keeping it clean

1. Confirm addresses at signup rather than accepting anything typed into a box. Typos and hostile entries both go in otherwise.
2. Remove hard bounces immediately and repeated soft bounces after a few attempts. Sending to dead addresses is what tells a mail provider you do not maintain your list.
3. Sunset the disengaged. A re-permission email after twelve to eighteen months of silence, then removal — a smaller list that people read outperforms a large one that they do not.
4. Keep the suppression list in the same place as the sending, never in a spreadsheet somebody maintains separately.
5. Audit quarterly by picking ten records at random and reconstructing where each came from. If you cannot, you have a problem worth finding now rather than during a complaint.

Buying a list is the shortcut that reliably costs more than it saves. Beyond the legal exposure in most jurisdictions, the practical damage is to deliverability: purchased addresses generate spam complaints and hit dormant traps, and the reputation you lose applies to every email you send afterwards — including the ones your customers actually asked for.

The legal frame, without pretending to be your lawyer

Rules differ by jurisdiction and by whether you are contacting a person or a business. Broadly, regimes such as the GDPR and the various anti-spam laws expect you to have a defensible basis for contacting someone, to say clearly who you are, and to make opting out easy and permanent. Some regimes allow marketing to existing customers about similar products without separate consent; others do not. What applies to you depends on where your recipients are, which is a question worth answering properly with qualified advice rather than by copying a competitor's footer.

Where it sits

Ettex Mail sends to the list and keeps the unsubscribe handling attached to the sending rather than to a side spreadsheet; signup forms land through Ettex Forms with the source recorded. The operational customer record is a separate thing and is covered in customer database, the choosing-a-platform question in email marketing platforms for small business, and the reputation mechanics in email deliverability.

What we do not do: there is no consent management platform, no third-party data enrichment, no lead scoring, and no compliance checking that will tell you whether a particular send is lawful in a particular country. We hold the list, the source and the suppression; the basis for contacting anyone is a decision you make and should be able to evidence.