A merchant weighing a tool that stops first-time discounts being used under different emails asks other merchants about their experience.
Discounts
Read the thread on Reddit (opens in a new tab)Answer coming
Answers to real Shopify merchant questions
Each post starts from one question a merchant asked in public. It says what the problem costs, how to reason about it, and what MergeGuard for Shopify does about it.
By MergeGuard team
Last updated
Questions merchants ask in public
Each card is a question a merchant asked on a public forum, paraphrased without names, with a link to the original thread. Answered cards link to our post. The rest are questions we plan to answer. Skip to the posts.
Reddit
Klaviyo Community
Shopify Collective orders use variant emails, so one person becomes several Klaviyo profiles and gets duplicate campaign sends. The merchant asks what safeguards others use.
Email lists
Reddit
A coffee brand cannot tell who its best customers are and says the Klaviyo VIP segment does not look like its most important customers.
VIP customers
Read the thread on Reddit (opens in a new tab)Answer comingReddit
People create new accounts with different emails to reuse a first-time discount. The merchant asks how to stop it while keeping the offer.
Discounts
Read the thread on Reddit (opens in a new tab)Answer comingReddit
Wrong customer data fills in at POS checkout. A receipt went to someone who did not order, and two customers' profiles were crossed.
Checkout and identity
Read the thread on Reddit (opens in a new tab)Answer comingShopify Community
One shopper placed three orders and the store ended up with four customer profiles, some with a phone and no email. The merchant wants one profile per person.
Duplicate profiles
Shopify Community
A merchant asks whether more than two customers can be merged at once. The one reply says the merge has to be repeated by hand and suggests a feature request to Support.
Merging
Reddit
A merchant merged two of one customer’s four profiles. The other two are blocked by a store-credit message even at a zero balance.
Merging
Read the thread on Reddit (opens in a new tab)Answer comingReddit
A customer still gets marketing emails after unsubscribing. A reply suggests they used a different email at checkout than at signup.
Email lists
Read the thread on Reddit (opens in a new tab)Answer comingReddit
A store collecting emails through several lead magnets worries about duplicate profiles and about re-subscribing someone who opted out.
Email lists
Read the thread on Reddit (opens in a new tab)Answer comingShopify Community
The new and returning customer counts for a month do not match the customer total or sales. A reply explains Shopify’s definitions.
Win-back and repeat buyers
Shopify Community
New-signup discount codes are being claimed through several accounts. The merchant asks how to detect and stop the repeat claims.
Discounts
Shopify Community
A pre-launch store finds that a newsletter signup stops the same email from creating an account later, with an "email already exists" error.
Email lists
Shopify Community
A cash-on-delivery setup created far more customer records than real people. The merchant wants automatic merging on phone number, and the replies point to a developer.
Duplicate profiles
Shopify Community
A busy shop has to stop sales to merge customers in the admin, and phone-only customers at the till block creating a new profile. Shopify’s reply says merging is not in POS.
Checkout and identity
Klaviyo Community
A merchant says Shopify customer merges do not carry over to Klaviyo, which leaves mismatched profiles and duplicate messages, and asks Klaviyo to use Shopify’s merge webhook.
Email lists
Shopify Community
A merchant asks for an automation that detects a duplicate when a customer is created and merges it or flags it for review. A later reply rates the suggested app poorly.
Duplicate profiles
Shopify Community
A merchant whose customers make several accounts, some to reuse a one-use discount, asks how to identify the duplicate profiles.
Duplicate profiles
Shopify Community
A developer cannot delete or merge a customer because the profile has subscription contracts, although every contract is canceled.
Merging
Shopify Community
A logged-in customer paid with Apple Pay and the order landed on a new profile under a different email. Shopify Support called that expected.
Checkout and identity
Klaviyo Community
After importing old lists on top of Shopify-synced contacts, a merchant wants to remove the overlap because Klaviyo bills by contact count.
Email lists
Shopify Community
Customers made accounts under different emails, so their spend sits on separate profiles and a reward tier based on total spend breaks.
VIP customers
Shopify Community
Customers mistyped their email, got a second account and miss notifications. The merchant wants their orders together for targeted marketing.
Email lists
Latest posts
- Checkout and identity
- Merging
Why you can’t merge customers in Shopify POS, and what to do instead
Shopify’s reply says merging customer profiles is not in POS. See what that costs a busy shop, what to do instead and where MergeGuard helps.
From a Shopify Community question of 4 min read
- Checkout and identity
- Merging
Apple Pay put the order on the wrong customer profile
A logged-in customer paid with Apple Pay and the order landed on a new profile. See why wallet emails split customers, what it costs, and how to decide.
From a Shopify Community question of 3 min read
- Discounts
- Duplicate profiles
Customers keep reusing my welcome discount with new emails
A merchant’s new-customer code kept being claimed through extra accounts. See what it costs, how Shopify decides who is one customer, and what to do.
From a Shopify Community question of 4 min read
- Merging
- Duplicate profiles
Merge four profiles into one Shopify customer, step by step
Shopify’s admin merges two customers at a time, so four profiles take three merges. Plan the group, choose the details once and see what MergeGuard does.
From a Shopify Community question of 3 min read
- VIP customers
- Duplicate profiles
My best customers have two accounts, so my VIP list misses them
A $5,000 VIP tier cannot see a customer whose spend sits on two profiles. See the arithmetic, why some profiles stay split, and how to count people instead.
From a Shopify Community question of 4 min read
- Win-back and repeat buyers
- Duplicate profiles
My new and returning customer numbers don’t add up
A store saw 225 customers, 191 new and 45 returning. Learn why those numbers differ, how duplicate profiles distort repeat rate too, and how to check your own.
From a Shopify Community question of 4 min read
- Duplicate profiles
- Checkout and identity
Shopify made four customers out of one. What now?
One shopper placed 3 orders and Shopify created 4 profiles. See what split profiles cost, how to tell one person from housemates, and how to merge safely.
From a Shopify Community question of 4 min read
How these posts are made
One question per post
Every post starts from a question a merchant asked in public. We link the thread and paraphrase it without names.
Figures you can trace
A number is cited, taken from MergeGuard’s facts, labelled as demo data from our demo store, or labelled as a made-up worked example.
A guide, a help article and a feature
A post is the story. The Knowledge guide, the Help article and the feature page it links to stay current.
See your own duplicate customers
Install MergeGuard for Shopify and review each group with its evidence. Nothing merges until you confirm, or until you switch on automatic merging for strong matches or groups that need your judgment.