What if the import goes wrong?

It tells you first. Your file is read in your own browser and checked before a single byte is uploaded, and then a practice run resolves every row against your real data and reports what would happen without saving anything. You only press the real button once you have seen the numbers.

Can I bring it in twice?

Yes. Records are matched on their natural key (SKU for products, email for customers, order number for orders) so running the same file again updates rather than duplicates. Fix something in the spreadsheet and re-drop it.

For most businesses there is nothing to do. It is a file and a button. If your data is genuinely awkward, email migrate@sparx.works and we will do the move with you.

← Every platform we move you from

Excellent email. Priced like a platform.

Your profiles with email and SMS consent read exactly as Klaviyo recorded it, plus lifetime value: from the profiles export.

Start moving →What it costs

One file, minutes.

klaviyo-profiles-....csv

read locally

This is a Klaviyo profiles export

We can tell from the columns and the file name.

Profiles

128 of 129 ready

128 profiles ready: 1 row will be skipped.

Must fix

Row 84: this record has no name.

Nothing has been saved yet.

It is the best email tool you can buy, and it is only an email tool.

1

Priced per profile, and profiles never go down

Every browser who once gave you an address is billable forever, whether or not they ever opened anything.

2

It is a second copy of your customer list

Klaviyo has a version of every customer, kept roughly in step with the real one by a connector. Two databases, one truth, and a nightly opportunity to disagree.

3

It does nothing else

It sends email and SMS very well. The shop, the stock, the support and the invoicing are all elsewhere, all paid for separately.

What comes across

Everything in this list is something an importer we maintain actually reads out of your Klaviyo export. It is generated from that importer, so it cannot promise you something we do not do.

CustomersSegments

The files you need from Klaviyo

Profiles

Audience → Profiles → Manage Profiles → Export Profiles to CSV

klaviyo-profiles-....csv

The list itself

The same profiles export: everyone in it becomes one segment

klaviyo-list-....csv

Stop keeping a second copy of your customers.

sparx sends the email from the same records that hold the orders. There is no sync, no lag and no second copy to reconcile: a flow that fires on "bought twice, not in ninety days" is reading the orders themselves.

What that changes

Email and SMS consent come across separately and exactly: Klaviyo is the cleanest consent export of any platform on this list, and none of it is guessed.
Lifetime value arrives with the profile.
One record per customer, everywhere, forever.

What does not come across

Every migration leaves something behind. Here is ours, so it is not a surprise halfway through.

Flows, campaigns and templates are rebuilt here.
Event and engagement history stays with Klaviyo.
Predictive analytics values do not transfer.

Before you start

Still curious? Read the platform docs, browse the API spec, or book a 20-min architecture call. We don't do high-pressure demos.

No. Everything happens on a copy. You export a file, and your Klaviyo account carries on exactly as it is. Plenty of people run both for a few weeks before switching their domain over.

Bring it over

Export the file Klaviyo already makes for you, drop it in, and look at what would happen before anything is saved. One file, minutes.

Get started →Ask us to do it