Email Marketing for a Small Online Store: Setup Before Your First Send, Your First Subscribers, the Three Shopify Messaging Automations, Campaigns, Klaviyo or Not, Consent and Deliverability

Every visitor you bring to your store costs you something: time on content, or money on ads. Most leave without buying, and you never see them again. Unless you have their email address.

Email is the channel you actually own: no rising bids, no algorithm changes, no account suspended overnight. It's also the channel that brings past buyers back without paying for ads again.

The example for the whole article is the same whole-bean coffee store as in customer retention (a made-up example). It just opened on Shopify and doesn't have a single subscriber yet.

Before your first send: three settings

1. A sender address on your own domain. The address your customers see is set in Settings > Notifications: it's your Sender email. If your domain isn't authenticated, Shopify rewrites it as store+123@shopifyemail.com, and your emails are more likely to land in spam.

• Domain bought through Shopify: SPF, DKIM and DMARC are set up for you.
• Domain on Cloudflare, GoDaddy or IONOS: in the Sender email section, click Email domain authentication, then let Shopify set up the records.
• Anywhere else: add the CNAME records Shopify gives you at your domain host, then a minimal DMARC TXT record: v=DMARC1; p=none;. Gmail and Yahoo require it to send from a branded address.

You can't authenticate a free address (Gmail, Outlook), since you don't control its domain. Use something like hello@yourdomain.com.

2. The consent checkbox at checkout. In Settings > Checkout, under Marketing opt-in, check Email. A checkbox appears at checkout so customers can agree to your emails. By default, the Regions you choose option is on with no region selected, so the box is never pre-checked. For customers in the EU and UK, it has to stay unchecked: they must opt in themselves.

The default text next to the box talks about news and offers. If you send abandoned cart emails, Shopify asks you to update it, in the same section.

3. Two free apps made by Shopify. Shopify Messaging sends your emails (and, if you want, SMS or WhatsApp messages). Shopify Forms builds your pop-up and signup forms. Messaging is available on the Basic, Grow, Advanced and Plus plans. On the Shopify App Store on September 24, 2026, Messaging was rated 4.7 from 4,482 reviews, and Forms 4.4 from 723 reviews.

Step 1: get your first subscribers

Nobody signs up for "the newsletter." People sign up to get something. Give them a real reason:

• A welcome code for the first order. It's the classic and it works, but it costs margin: see build an offer that converts.
• A gift instead of a percentage. On r/ecommerce, a merchant who took over email for a clothing brand says they tested more than 50 pop-up versions over 7 months: the pop-up's signup rate went from 2.8% to about 7%, and the winning offer was "a free accessory when you spend $100."
• Useful content: for coffee, "how to pick the right grind for your brewer."
• Early access to new origins or limited batches.

Also say what people will get and how often. That promise sets your campaign schedule later on.

Where to put your forms:

• A pop-up that shows after a few seconds on the site or when the visitor is about to leave, not the moment they land.
• The footer, on every page. Addresses left in your theme's newsletter form go to the Email subscribers segment on the Customers page.
• The checkout checkbox, set up above. On r/ecommerce, one merchant calls it underrated: "someone who's already buying is way more likely to subscribe than a random visitor who just landed on your homepage."
• Moments when the visitor already has a reason to sign up: back-in-stock alerts, a product quiz, post-purchase content. Another merchant in the same thread says those subscribers "will usually be more valuable than people captured through increasingly aggressive popups."

Double opt-in. The new subscriber gets an email and has to click a link to confirm. Your list grows more slowly, but fake addresses and typos stay out. To turn it on: Settings > Notifications > Customer notifications, under Marketing double opt-in, select Customer marketing confirmation. Shopify notes that some countries require it by law, and adds a dedicated checkbox for stores based in Germany. If you turn it on, change the message shown after signup so people know to check their inbox.

Step 2: the three automations to turn on first

These are emails you write once that go out on their own at the right moment. Shopify Messaging offers eleven of them as templates. Start with these three:

For each one: Apps > Messaging > Automations > Create automation, pick the template, click Edit email to write your copy, send yourself a Send test, then Turn on.

The welcome series. The template sets the structure; you write the content. For the coffee store:

1. Right away: the promised code, plus a reminder of what's coming (tips twice a month).
2. Second email: the store's story, where the beans come from, who roasts them. This is where your message from sell the problem, not the product goes: here, a morning coffee that finally tastes like something.
3. Third email: which grind for which brewer. Useful, not salesy.
4. The reminder, only if nothing was bought: the code expires soon.

On r/Emailmarketing, one line sums up the difference between the first two automations: "Abandoned cart captures demand, welcome flow shapes it." But don't judge your campaigns against your welcome series. As another commenter points out, it reaches people at their most curious, while a campaign also goes to people who signed up eight months ago.

Abandoned checkout recovery. It's the fastest earner, and it's free: these emails don't count toward your Shopify Messaging quota. By default it only goes to subscribers. In the email editor, you can switch the To: field to All customers. In the US that's allowed as long as each email follows CAN-SPAM. For shoppers in the EU, stick to subscribers: consent rules there only exempt people who have actually bought from you. Timing, copy and whether to add a discount are covered in abandoned cart recovery.

The post-purchase thank-you. It doesn't sell anything right away. It says thank you, gives the right dose and storage tips, and answers questions before they come up. What comes next (replenishment reminders, the second-order offer) is in customer retention.

What's next? Once these three are running, the next templates are Recover abandoned cart (cart filled, checkout never started), Convert abandoned product browse and Win back customers, for people who haven't ordered in a long time. Watch your quota: every automation except abandoned checkout counts toward your 10,000 monthly emails.

Step 3: campaigns, at the pace you promised

A campaign is an email you send once, to your subscribers or a slice of them. For the coffee store:

• A new origin or a restock;
• A tip: storing beans, dialing in a grinder, making better pour-over;
• An offer tied to a date: a launch, Father's Day, the holidays.

Your schedule is the one you promised. The example pop-up says two emails a month: stick to that. On r/ecommerce, the debate gets heated. The pop-up merchant recommends three emails a week, "highly segmented to avoid list fatigue." One reader answers: "If I get anything remotely close to 3 emails per week from a brand, it's an instant unsubscribe." The first merchant's reply settles it: "That's why segmentation is important. The same customer does not receive 3 emails per week, only 1." What matters is emails per person, not per list.

Simple segments. In Shopify, a segment updates itself. Two are enough to start:

• Subscribers who never bought: email_subscription_status = 'SUBSCRIBED' AND number_of_orders = 0. They get the guide and a longer welcome offer.
• Customers: email_subscription_status = 'SUBSCRIBED' AND number_of_orders >= 1. They get new origins and how-to tips.

On r/shopify, a merchant who moved from Klaviyo back to Shopify says Shopify's segmenting "has come on in leaps and bounds in the last couple of years."

Shopify Messaging or Klaviyo: do the math

They don't bill for the same thing. Shopify Messaging counts emails sent, while Klaviyo counts the profiles you can reach, even people who never subscribed.

Prices from the official pages on September 24, 2026, in US dollars.

The Klaviyo detail that changes everything. An active profile is "any profile, regardless of consent status, that can be emailed through Klaviyo." A customer who gave their address at checkout without checking the box counts. If you go over your tier, Klaviyo moves you up at the end of the billing cycle. You can suppress or delete profiles, but the count takes up to 72 hours to refresh.

The worked example. A year in, the coffee store has 1,200 subscribers and 800 buyers who didn't check the box.

• Klaviyo: 2,000 active profiles, so the 2,500 tier: $60 a month.
• Shopify Messaging: two campaigns a month to 1,200 subscribers (2,400 emails), a 4-email welcome series for 150 new subscribers (600 emails) and 200 post-purchase thank-yous. Total: about 3,200 emails, under the 10,000 free: $0.

On r/shopify, a merchant finds a Klaviyo bill of $325 a month for 11,000 contacts, only 3,000 of whom opened anything in six months.

What merchants say. In an r/shopify thread, a clothing store asks whether it's missing out by staying on Shopify instead of Klaviyo. The answers:

• "We went from klaviyo back to Shopify. [...] Klaviyo is objectively more powerful, but for our tiny team of 3 it was more than we could really take full advantage of. [...] Our open and click through rates are about the same as they were through Klaviyo."
• "If you haven't gotten to a point of wanting to set something up and not being able to due to the constraints of the platform, don't change. [...] It is not a low maintenance platform."
• Another sets a threshold: stay on Shopify until roughly 5,000 engaged profiles, or until "send to everyone" newsletters stop working. And never run half your flows in one tool and half in another during a migration: suppression lists stop syncing and people get emailed twice.

When to move on. When you're stuck on something specific: automations with conditions and branches, segments based on how people engage with your emails, or a design the Shopify editor can't do. Klaviyo isn't the only option: merchants in these threads also mention Omnisend, Brevo and MailerLite.

CAN-SPAM, and consent outside the US

The FTC sums up CAN-SPAM in a few rules for every commercial email:

• No false or misleading header information: the "From," "To" and "Reply-To" must identify you.
• No deceptive subject lines.
• Say it's an ad, clearly.
• Include your valid physical postal address: a street address, a USPS post office box or a registered private mailbox.
• Explain how to opt out, clearly, and honor opt-outs within 10 business days, for free.
• You stay responsible even if an app or agency sends for you.

Each email that breaks the law can cost up to $53,088. The FTC's list doesn't include getting permission first: it's about how you send and letting people leave. Consent is required elsewhere, though. In the EU and the UK, you need people's prior consent to send them marketing email, with a box they check themselves. The main exception is past customers, for similar products.

On Shopify's side, a subscriber leaves your list when they click Unsubscribe, mark your email as spam or opt out from their account. An address that bounces is suppressed from future sends.

Landing in the inbox, not in spam

• An authenticated domain: setting no. 1 above. Gmail requires SPF or DKIM from every sender.
• A spam complaint rate under 0.3%, per Gmail's sender guidelines. The safest way to get there: only email people who actually signed up.
• Never a bought or scraped list. If you import customers, Shopify recommends checking every name and address first.
• A visible unsubscribe link. A reader who can't find the way out hits "spam" instead, and that hurts far more.
• Clean out inactive subscribers. An r/shopify merchant does it with an automation: no engagement for 90 days gets a win-back email, then, with no response, removal from the list.

Measure clicks and sales, not opens

On iPhone, Mail Privacy Protection (the Protect Mail Activity setting) stops senders from seeing whether you opened their email. Your open rate is skewed, usually upward. Watch these instead:

• Clicks and orders attributed to each email, in Shopify Messaging's reports;
• Unsubscribes after each campaign: a spike means the content or the pace is off;
• The share of your revenue that comes from email, month over month. On r/shopify, one merchant puts it at 25 to 30% for a clothing brand, mostly from automations. That's one merchant's view, not a standard, but it gives you a ballpark.

For more on reading your numbers, see how to read campaign metrics.

FAQ

Sources

• Shopify Messaging email pricing, Shopify Messaging marketing automations and Creating and managing marketing automations, Shopify Help Center, accessed September 24, 2026
• Collecting customer contact information (consent checkbox, double opt-in) and Email subscriber list management, Shopify Help Center, accessed September 24, 2026
• Setting up your email (sender email, authentication, DMARC), Shopify Help Center, accessed September 24, 2026
• Shopify Messaging and Shopify Forms listings, Shopify App Store, accessed September 24, 2026
• Klaviyo pricing and How Klaviyo billing works (active profiles), accessed September 24, 2026
• CAN-SPAM Act: A Compliance Guide for Business, FTC, accessed September 24, 2026
• Email sender guidelines, Gmail Help, accessed September 24, 2026
• Use Mail Privacy Protection on iPhone, Apple Support, accessed September 24, 2026
• Commercial prospecting by email, SMS and automated calls (in French), CNIL, accessed September 24, 2026
• r/shopify threads accessed September 24, 2026: Am I missing out by using Shopify emails vs Klavyio?, Klaviyo is charging me for 11,000 contacts but only 3,000 of them have opened anything in the last 6 months
• r/ecommerce threads accessed September 24, 2026: What is the best way to grow email lists without relying only on popups?, Email revenue went from 18% to 32%. Here's everything I changed
• r/Emailmarketing thread accessed September 24, 2026: Idk if anyone else noticed this but welcome flows are lowkey carrying entire email programs