Skip to content
MergeGuard

Menu

Install free

Find duplicate customers and see why they match

MergeGuard for Shopify scans your customers and groups profiles that look like one person. Each group shows the matching name, email, phone and address details and a recommended profile. In a group’s review you choose the details to keep. Nothing merges until you confirm, or until you switch on automatic merging for strong matches or groups that need your judgment.

Last updated

Demo store (Northsail Supply)

Inès Moreau, 4 profiles

Some details differ

  • NameSimilar on all 4

    • AInès MoreauSimilar
    • BInes MoreauSimilar
    • CI. MoreauSimilar
    • DInès M.Similar

  • Email4 different

    • Aines.moreau@gmail.comDiffers
    • Binesmoreau84@outlook.comDiffers
    • Ci.moreau@icloud.comDiffers
    • Dines.m@proton.meDiffers

  • PhoneA, B and C match · missing on D

    • A+44 7700 900118Matches
    • B07700 900118Matches
    • C+44 7700 900118Matches
    • DNo phoneMissing

  • Address30 Harbour Wynd, on all 4.

    • A30 Harbour Wynd, EH6 6QT, EdinburghMatches
    • B30 Harbour Wynd, EdinburghMatches
    • C30 Harbour Wynd, EH6 6QT, EdinburghMatches
    • D30 Harbour Wynd, EdinburghMatches

Four different emails, one address and the same phone on three. You decide whether it is one person.

One group from the demo store, compared field by field. Each profile’s value says whether it matches the others, differs or is missing.

Your regular looks like three new shoppers

A shopper checks out as a guest, then again with a new email, and Shopify starts a new profile each time. Every profile holds a slice of their orders, so your best customer can look like three first-time buyers. Shopify’s own merge joins two profiles you already know about, and its help page doesn’t describe a way to find duplicates for you. MergeGuard scans the whole store and puts the profiles that look like one person into groups, so you start from the evidence.

Demo store (Northsail Supply)

Strong
18
Needs your judgment
11
Protected
6
Marked not a duplicate
2
New
7
What the first scan found in the demo store, sorted into the views you review. Most groups are ready to look at, and a few need a closer look.

How it works

  1. MergeGuard sorts your customers into groups

    The scan puts profiles that look like one person into groups and sorts them into Strong (details match closely), Needs your judgment (some details differ) and New (found since your last visit). Protected groups and groups marked not a duplicate sit under Show.

  2. Open a group and see why it matches

    The review sheet shows why we think it’s one person. You see which names, emails, phones and addresses match across the profiles, and which profile we recommend keeping.

  3. Choose what the customer keeps

    When you review one group, pick the email, phone, address and other details the merged customer keeps, one field at a time. In a bulk merge, MergeGuard picks each group’s details.

  4. Merge, or mark it not a duplicate

    Merge opens a final check that says the merge can’t be undone and is recorded in History. Not a duplicate tells MergeGuard these are different people. A group you don’t decide stays in your open groups.

  5. Shopify verifies the result

    After you confirm, the app shows “Shopify is verifying the result.” and then “Shopify verified the merged customer.” The record goes to History.

How groups are sorted

  • Strong: details match closely.
  • Needs your judgment: some details differ. Check what matches and what doesn’t before you decide.
  • New: groups found since your last visit.
  • All open: every open group.

The Show filter also lists Protected groups, which Shopify won’t merge (see protected profiles for why), and groups Marked not a duplicate. Restore puts a group back in your list.

Merge many duplicate groups at once

Shopify merges two profiles at a time. MergeGuard merges a whole group into one customer with one confirmation, and it can merge every strong match in a single confirmed action. Each merge counts against your allowance as the number of profiles minus one, so a group of five uses four merges. For a step-by-step guide, read how to merge many duplicate customers at once.

Before your first merge, read what happens when you merge customers. It covers orders, marketing subscriptions and why merges are permanent.

What you control

Which details are kept
When you review one group, you choose the email, phone, address and other details the merged customer keeps. In a bulk merge of strong matches, MergeGuard picks each group’s details.
Marked not a duplicate
Groups you mark as not a duplicate leave your list and never merge. Restore puts a group back in your list.
Merge every strong match at once
In strong matches the details match closely. You can merge all of them in one confirmed action, and MergeGuard picks each group’s details. If you don’t have enough merges left in your allowance, MergeGuard merges some of them and the rest wait.

What it never does

  • Nothing merges until you confirm, or until you switch on automatic merging for strong matches or groups that need your judgment.
  • A group marked not a duplicate never merges.
  • Protected profiles are never merged automatically.
  • MergeGuard never messages your customers.

What can be undone

Merges are permanent because Shopify merges can’t be undone. MergeGuard keeps a snapshot of each merged customer, and a group marked not a duplicate can be restored to your list.

Merges
Permanent.Shopify merges can’t be undone. MergeGuard keeps a snapshot.
Contact fixes
Can be undone once.The undo is its own record and uses 1 fix.

Works with

Questions merchants ask

Which profile is kept when I merge a group?

MergeGuard recommends a profile to keep from the profiles that have the details your merge rule asks for, or from every profile when none has them. The kept customer uses a subscribed email or phone when one of the profiles has it. When you review a group, you choose which details to keep before you confirm. A bulk merge of strong matches lets MergeGuard pick each group’s details.

Can I merge more than two profiles at once?

Yes. A whole group, for example four profiles, merges into one customer with a single confirmation. Shopify’s own merge handles two profiles at a time. A group of four uses three merges from your allowance.

What happens to the orders on each profile?

Orders from all the merged profiles appear under one customer. Shopify doesn’t let you move a single order from one customer to another, so merging the profiles is how a split order history comes together.

Can I undo a merge?

No. Shopify merges are permanent. MergeGuard keeps a snapshot of each merged customer and saves every merge in History, but neither reverses a merge. Check why the profiles match and which details are kept before you confirm.

Can I try it for free?

Yes. The Free plan includes 25 merges and 5 contact fixes, once per store. Paid plans start at $29 a month, and Starter, Growth and Scale come with a 14-day free trial.

Learn more

Open your first scan and see the evidence

Install MergeGuard for Shopify free and see every duplicate group with the details that match. Nothing merges until you confirm, or until you switch on automatic merging for strong matches or groups that need your judgment. The Free plan includes 25 merges, once.

Install free