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By Rich Evans

Migrating your email platform should feel straightforward. Export your list, rebuild your flows, flip the switch. Job done.

In reality, it's one of the most disruptive tech stack changes a D2C brand can make, and the brands that struggle through it almost always wish they'd asked more questions before they started.

We see it regularly. A brand gets frustrated with their current platform; deliverability feels off; the segmentation is clunky; a competitor is raving about some new, shiny tool, and suddenly, a migration feels like the obvious fix. Sometimes it is. But often, the platform isn't the real problem. And even when it is, a poorly planned migration can quietly kill your email revenue for months.

So before you make the change, ask yourself these five questions.

This is the big one, and it's the question most brands skip entirely.

If your email performance is underwhelming with low open rates, weak flow revenue, and poor retention, it can be tempting to look at a new tool. But more often than not, the issue is what's being done with the tool, not the tool itself. Undercooked segmentation, basic automations that haven't been touched in two years, and campaigns that go out to everyone with no personalisation. These are strategy problems, not platform problems.

A shiny new platform won't fix a weak strategy. It'll just give you a more expensive place to run it.

Before you even look at alternatives, audit what you've actually built. How many active flows do you have? Are your segments based on real behaviour or just basic list splits? Are you using your platform's native analytics to understand what's driving revenue? If the honest answer is "not really", that's your starting point, not a migration.

When brands assess migration costs, they almost always anchor on the platform licencing fee comparison. Platform A costs X, Platform B costs Y, so the saving is Z. That maths is rarely the full picture.

The hidden costs are in the rebuild. Every flow you've built, from your welcome series, post-purchase sequence, win-back, browse abandonment, back-in-stock, now needs to be recreated from scratch on the new platform. That takes time and expertise, and while it's being rebuilt, those flows aren't running. Depending on your current flow revenue contribution, you could be looking at weeks of significant lost income before the new setup is even at parity with what you had before.

Then there's your segmentation logic. Behavioural segments built over months or years don't automatically transfer. Your data structure on the new platform may be different. Properties, flow filters, property updates, and events that your current platform tracks might not exist natively elsewhere, or need to be recreated via integrations.

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