Consent and unsubscribes: the boring bits, done once properly

Somebody replies to your launch email with one line: how did you get my address? You know the answer, roughly. They downloaded something, or bought something, at some point, probably last year. But you cannot say which, or when, or what the page said at the time, and the wobble you feel while typing a reply is the real subject of this article. Consent is not mainly a legal problem for a creator with a few hundred customers. It is a memory problem, and it is solved by writing three things down once.

Three doors, one list

Your customer list builds itself. Every purchase, every membership and every free download adds a person, with their lifetime value beside their name. That is convenient, and the convenience hides something worth noticing: those three doors are not the same door, and the people walking through them are agreeing to different things.

Somebody who paid you £40 for a course has bought a relationship with follow-up in it. They expect to hear about the thing they bought, and they are rarely surprised to hear about the next one. Somebody who took a free lead magnet has traded an address for a file. That is a fair trade and a real permission, but it is a thinner one, and the tone of your first email to them should reflect that they have not yet spent anything. A member is different again: they are paying you monthly, so operational mail about their own membership is not marketing at all, it is service.

Here is the part that is genuinely hard, and no platform can do it for you. The law that applies to you depends on where you are and where your reader is, and it changes. Nothing below is legal advice. What it is is the practical layer underneath the law, the part that is the same everywhere: know where each address came from, say what you will send, and stop the moment somebody asks.

What changes when the list builds itself

Most creators arrive carrying a spreadsheet. Addresses gathered from a giveaway, a course platform, a Google Form, an old newsletter tool, all merged into one sheet where every row looks identical. That sameness is the problem the table below is really about.

The once-only setup

This takes about half an hour and you will not repeat it for a year. Do it before the next campaign rather than after the next complaint.

A list of 900, read properly

Say your list shows 900 people. Sorting by how they arrived, it turns out to be 380 buyers across four products, 60 members paying monthly, 400 free-download addresses from a single popular checklist, and 60 rows imported from a Google Form you ran in 2024. Before that sort, it was one number, and one number invites one email. Afterwards it is four groups with four different amounts of goodwill in them.

The practical consequence is unglamorous, and none of it needs a tool beyond the features you already have. The 60 imported rows get one plain re-introduction and then get left alone unless they respond. The 400 free-download addresses get something useful before they get an offer, because their entire experience of you so far is a file. The 380 buyers can be written to directly about a related product, and the 60 members mostly need service mail rather than sales mail. Same list, four tones, and no part of that required a segmentation tool — only the willingness to look at where people came from, which is already recorded.

The mistake: treating a receipt as an advert

The most common error is not spam. It is the slow blurring of service mail into marketing mail, because service mail gets opened. The delivery email grows a postscript about the new bundle. The receipt gains a banner. The membership renewal notice acquires an upsell. Each addition is small and each one is rational, and together they teach people that mail from you is always selling, which is the exact belief that makes the next genuine notice go unread.

Keep receipts, download links and membership notices clean. If you sell across ten product types, you have plenty of room for promotion in mail that people opted into for promotion. Read the FAQ if you want the specifics of what gets sent automatically, and keep your own additions on the marketing side of the line.

None of this is interesting work, and that is precisely why it is worth doing once rather than repeatedly. Half an hour with your two sentences, a rule about what counts as marketing, and a habit of looking at where a row came from before you write to it. After that the awkward reply is not awkward, because you know the answer, and knowing the answer is most of what confidence in email actually is.