Switching is a sequence, not a leap.
Six platform-specific guides that say plainly what transfers, what you rebuild, and the order to do it in. The order is the part that matters: it is what stands between a routine migration and a damaged sending reputation.
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The big four
Where most migrations come from, and where the cost difference is largest.
Quick migrations
Simpler accounts, usually finished in a day or two.
The four rules that decide whether a migration goes well
1. Authenticate before you send anything. Publish SPF and DKIM — and DMARC if you use it — for your sending domain on the new platform before the first campaign leaves. Gmail and Yahoo have required authentication from bulk senders since February 2024, and an unauthenticated first send from an unfamiliar platform is treated exactly like forged mail. The setup guide has the records to paste.
2. Suppressions before contacts. Export unsubscribes, bounces and complaints from your old platform and import them into the new one first. Doing it the other way round means a window in which someone who opted out is mailable — and the first campaign after a migration is exactly when that gets noticed.
3. Leave the dead part of the list behind. Send-based billing makes storing dormant contacts free, which is precisely why it is tempting to bring everyone. Do not. Contacts who have not engaged in a year hard-bounce, complain, and occasionally turn out to be spam traps — and they will do it on your very first send, when your reputation on the new platform is still being established.
4. Ramp, do not switch. Start with your most engaged segment and increase volume over several days. Receiving servers judge an unfamiliar sending pattern partly on how recipients respond to it, so leading with the people most likely to open builds reputation and leading with everyone at once does the opposite.
Questions people ask before switching
Will switching platforms hurt my deliverability?
Only if you sequence it badly, and there are four things that decide it. Authenticate your sending domain with SPF and DKIM before you send anything from the new platform. Import your suppression list before your contacts, so nobody who opted out gets mailed. Leave behind contacts who have not engaged in a year or more rather than carrying them across because storage is free. And ramp volume over several days starting with your most engaged segment, rather than sending to everyone on day one. Migrations that damage a sender's reputation have almost always skipped one of those four.
Do my automations transfer?
No — and no platform's do, in either direction. Branching, timing, conditions and goals are modelled differently everywhere, so automations are rebuilt rather than imported. This is the single most useful thing to know before you start, because discovering it on day three is what turns a planned migration into a stressful one. The good news is that most accounts have two or three flows doing nearly all the work, and Bluey templates the common ones.
What actually does transfer?
Contacts, email addresses, custom fields, tags, list or group membership, and your unsubscribe and bounce lists. Email templates transfer as HTML and usually need a rendering check afterwards. Everything else — automations, forms, landing pages, segment definitions, historical reporting — is rebuilt or left behind. Each platform guide has the full table.
Should I cancel my old platform straight away?
No. Downgrade rather than cancel, and keep the account for at least a month. You retain access to historical reporting, you have somewhere to fall back to if something is not right, and you can export anything you forgot. Cancel once you have run a full billing cycle on Bluey without surprises.
Can you migrate for me?
Support will build your core flows with you during the trial rather than pointing you at a help document. Get in touch with the platform you are leaving, your list size and the flows you actually depend on, and you will get a realistic plan rather than a sales call.
What if my platform is not listed?
The sequence is the same whichever tool you are leaving: authenticate, import suppressions, import contacts, rebuild the flows that earn, run in parallel, ramp volume. The platform-specific pages exist for the traps that are particular to each tool. If yours is not here, the Mailchimp guide is the closest general template.
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