What a healthy ecommerce email list looks like#
A good list is made of people who asked to hear from you and remember doing so. That matters more than size: subscribers who chose to join open, click and buy, and they rarely mark you as spam. People who were added without asking do the opposite, and their complaints hurt delivery to everyone else on the list.
Every method below has two parts. One is a moment when a shopper is already interested. The second is a clear, unticked choice to receive marketing email, saved with a consent record: the date, the source and the wording they agreed to. Under the GDPR, the burden of proving consent sits with the business S2.
Where to place sign-up forms on your store#
Most sign-ups come from a few places. Each one should say what people will receive and roughly how often.
| Placement | Works well for | Keep in mind |
|---|---|---|
| Footer form on every page | Returning visitors who already know the brand | Low effort, steady trickle. Make the purpose specific, not just “newsletter”. |
| Pop-up or slide-in | First-time visitors browsing products | Delay it until someone has scrolled or viewed a second page, and make it easy to close on mobile. |
| Inline on product pages | Sold-out sizes and upcoming drops | A “tell me when it’s back” form converts interest that would otherwise leave. |
| Dedicated landing page | Links from social bios, ads and QR codes | One form, one promise, nothing else to click. |
| Customer account sign-up | Shoppers creating an account | Offer email marketing as a separate, unticked choice. |
Ask for an email address and, at most, one more field that you will actually use, such as a first name or a birthday for a birthday offer. Every extra field lowers completions.
Sign-up incentives that fit an apparel brand#
A first-order discount works, but it also trains new subscribers to wait for codes. For a fashion or apparel shop, the most persuasive reasons to join are often about access and fit. Take Ninefold, an illustrative small brand selling knitwear, outerwear and basics:
- Early look at new drops. Subscribers see the autumn knitwear a day before it goes on the site. This pairs well with a VIP presale email.
- Back-in-stock alerts. A product-page form for sold-out sizes builds a list of people with a specific purchase in mind. See the back-in-stock template.
- Fit and care guides. A short guide on how the coats fit across sizes, or how to wash merino, answers questions that block a first order.
- Restock and limited-run notices. For small batches, being told first is a real benefit.
- A modest welcome offer. Free shipping on a first order or a small discount, if your margins allow it.
Whatever you offer, deliver it immediately in the welcome email. A promise that arrives a week later teaches people to ignore you.
Checkout, post-purchase and in-person sign-ups#
At checkout
Checkout is where most buyers can be asked, because they are already entering an email address. Add a marketing opt-in box that is unticked by default. In Shopify, you can choose the regions where the box is preselected or leave none selected so every customer must opt in manually S5; for customers in the EU, a preselected box does not produce valid consent S1S2.
After the purchase
The order confirmation page and the shipping email are good places for a second, gentle invitation: “Want to hear about the next drop?” Keep this separate from order updates, which are transactional and should reach the customer regardless of marketing choices. A post-purchase email can carry the same invitation.
Social profiles
Link your bio to a landing page with a single form, and mention it when you post a new product. Followers who also join your email list are reachable even when a platform changes how many people see your posts.
Pop-ups, markets and in-store
If Ninefold sells at a weekend market or a pop-up, a QR code on the counter that opens the landing page lets shoppers sign up on their own phone, which also captures their consent in the same system as online sign-ups. A paper sheet works too, as long as it shows the opt-in wording and you keep the sheet as your record.
Single or double opt-in: the tradeoffs#
With single opt-in, people are subscribed as soon as they submit the form. With double opt-in, they receive an email and are subscribed only after they click to confirm. Yahoo recommends asking new subscribers to click to confirm S6, and Shopify offers double opt-in as a store setting S7.
| Aspect | Single opt-in | Double opt-in |
|---|---|---|
| List growth | Faster; every submission counts | Slower; some people never confirm |
| Typos and fake addresses | Get onto the list and bounce later | Filtered out before any campaign |
| Proof of consent | Form submission only | Form submission plus a confirmation click |
| Best for | Checkout opt-ins, where the address is already verified by the order | Pop-ups, landing pages and events |
Many shops combine the two: single opt-in at checkout, double opt-in for forms that anyone can fill in.
What not to do when growing your list#
- Do not buy or rent lists. Yahoo tells senders not to purchase mailing lists S6. In the UK, the ICO notes that the existing-customer exemption does not cover contacts from bought-in lists, so you would need specific consent from each person S3.
- Do not pre-tick consent boxes. Under the GDPR, pre-ticked opt-in boxes are invalid, and silence or inactivity does not count as consent S2. The European Commission gives the same example S1.
- Do not bundle consent into terms and conditions. A consent request should be clear and separate from other information S1.
- Do not scrape or harvest addresses. In the US, harvesting addresses is an aggravated violation under CAN-SPAM S4.
- Do not hide the way out. Every marketing email needs a working unsubscribe link, and US law requires opt-outs to be honored within 10 business days S4.
Rules differ by country. The UK allows a “soft opt-in” for similar products to existing customers if they were given a clear chance to opt out when their details were collected and in every message since S3. Check the rules for where your customers live in our guide to email marketing consent laws.
Bringing your list into Tellnod and emailing new subscribers#
Tellnod lets you send marketing email from Claude or ChatGPT. If you already have subscribers in Shopify or another tool, export them as a CSV with their consent status and attach the file in the chat. Consent status and unsubscribes are kept, and contacts without consent information are not marked as subscribed until you confirm they opted in.
- “Import my customers from this CSV. Only mark people as subscribed if the file says they opted in.”
- “How many subscribed contacts joined in the last 14 days?”
- “Write a short welcome email for people who subscribed this month, with the knitwear fit guide and a link to new arrivals. Show me the mobile preview.”
Tellnod shows the real email on desktop and mobile, then a confirmation card with the audience, the exclusions and the send time; you press Confirm, not the AI. Today you can send a one-off welcome campaign like this to recent sign-ups. Automated flows that send a welcome series to each new subscriber are planned, not yet available. Unsubscribe links and a compliance footer are added to every campaign.
The Free plan covers up to 500 contacts, and paid plans are on the pricing page. To try it with your own list, connect Tellnod to Claude or ChatGPT.
FAQ#
How do I get my first 100 email subscribers?
Start with people who already buy from you: add an unticked opt-in at checkout and invite past customers through the order confirmation page. Then add a footer form, a product-page back-in-stock form and a link in your social bio. Your first subscribers usually come from existing customers and followers.
Can I email customers who bought from me but never subscribed?
It depends on the country. In the UK, the soft opt-in allows marketing similar products to existing customers if they were offered a clear opt-out when they bought and in every message S3. Elsewhere you may need explicit consent, so ask through a sign-up invitation instead of adding them to your marketing list.
Is it legal to buy an email list?
Even where buying a list is allowed, emailing the people on it generally needs their consent in the UK and EU, and mailbox providers such as Yahoo tell senders not to purchase lists S3S6. Bought lists also cause bounces and spam complaints that damage your delivery to real subscribers.
Should I use a pop-up on my online store?
A well-timed pop-up is one of the more effective sign-up forms. Show it after a visitor has scrolled or viewed a second page, make the offer specific, and make it easy to close on a phone.
Sources#
- [S1] European Commission: How should my consent be requested?, checked
- [S2] EDPB: Guidelines 05/2020 on consent under Regulation 2016/679, checked
- [S3] ICO: Electronic mail marketing, checked
- [S4] FTC: CAN-SPAM Act compliance guide for business, checked
- [S5] Shopify Help Center: Editing the checkout form options, checked
- [S6] Yahoo Sender Hub: Sender best practices, checked
- [S7] Shopify Help Center: Understanding customer privacy settings, checked