Email and SMS platform migration
Enflow Digital runs email marketing migration for ecommerce brands. We move you to Klaviyo, Omnisend or Brevo from Mailchimp, Yotpo, Attentive and other tools, with your subscribers and their consent, suppressions, segments, flows, templates and SMS. Then we warm up the new sending domain and cut over on a date you approve.
Ecommerce brands switch email platforms for the price, for features their tool lacks, or because the tool is closing. Most of the migrations we have run lately moved brands from Klaviyo to Omnisend, for the price, or from Mailchimp to Klaviyo or Omnisend, for features Mailchimp lacks.
Klaviyo prices its email plans by active profiles, the people you can reach. We remove contacts who never open, compare the cost on Omnisend, and move you there if the numbers work.
Stores outgrow a newsletter tool when they want segments built on orders and flows that react to browsing, carts and purchases. Klaviyo and Omnisend run on store data and send email and SMS from one account.
Yotpo retired its email and SMS tools at the end of 2025. When a tool closes, we move the flows, forms and SMS subscribers before it stops sending.
A rushed move can send email to spam or mail people who unsubscribed. We move suppressions first, keep every consent record and warm up the new sending domain before full volume.
Enflow Digital plans and runs email and SMS for ecommerce brands on Klaviyo, Omnisend and Brevo. The figures below cover every client we have served, not migrations alone.
5.0 out of 5
on the Omnisend partner directory
100+
brands served
$50M+
in client revenue, tracked in Klaviyo
the founders have worked in email since
2018
Omnisend published a story about Lone Wolf Paintball, a paintball brand we moved from Yotpo to Omnisend. Our summary of the story lists what we moved and rebuilt. The other two cards are Omnisend stories about our campaign and flow work, not migrations.
Yotpo to Omnisend, paintball retailer
28%
of store revenue from email by month three
Abandonment flows recovered 3.5x more events than Shopify's default
Source: Omnisend customer story
Hobby brand, campaigns and automations
$150K to $250K
Omnisend revenue per month
Automation revenue grew from $0 to $61K a month
by April 2024
Source: Omnisend customer story
Skincare brand, Black Friday
$17,980.66
from one VIP email
1,676 emails sent and 110 orders, more than all of the previous month's broad campaigns combined
Source: Omnisend customer story
Every result here comes from Omnisend's own write-ups. A brand is named only where Omnisend names it.
An email marketing migration moves nine parts of your account. Contacts and their records are imported. Segments, flows, templates and forms are rebuilt in the new platform.
Each contact moves with its opt-in source, date and double opt-in status, so you can show where every subscriber came from.
Unsubscribes, hard bounces and spam complaints go into the new account first, so nobody who left gets mail from the new platform.
Segments are rebuilt in the new platform's data model, not copied: buyers, VIPs, engaged subscribers and lapsed customers.
Flows are rebuilt in order of the revenue they brought in and tested before launch. The old flows switch off at cutover.
Templates are rebuilt in the new editor with your logo, colors, fonts and footer. Personalization tags differ between platforms, so we test each one.
New sign-up forms replace the old ones, and the old form code comes off your site, so sign-ups stop landing in the old tool.
We reconnect your store, review, loyalty and subscription apps, onsite tracking and UTM tags, then check that the events arrive.
SMS consent records move with their proof. We plan any change of sending number and keywords with the carrier rules in mind.
Campaign reports stay in the old account, so we export them before it closes. Revenue by flow starts fresh in the new platform.
An ESP migration, a move from one email service provider to another, runs in nine steps. The steps follow Klaviyo's guide to migrating from another email service provider and add a side-by-side run with written cutover criteria.
Step 1
We rank your flows and campaigns by revenue and check list health, consent records and integrations. The audit decides what is worth moving.
Step 2
We authenticate your sending domain with SPF, DKIM and DMARC, set up a branded sending domain and connect your store and apps. See sending domain verification.
Step 3
Suppressions go in first, then subscribers with their consent records. Klaviyo warns that CSV imports can trigger list-based flows, such as a welcome series, so those flows stay off during the import.
Step 4
Segments are rebuilt in the new data model. Engaged subscribers come first, because the first sends go to them.
Step 5
The welcome, abandoned cart and post-purchase flows usually come first. Each flow is tested with test orders before it goes live.
Step 6
Templates are rebuilt in the new editor. The new forms go live and the old form code comes off the site.
Step 7
The old account keeps sending while the new one is tested. The cutover criteria are written down first: flows tested, forms switched, warm-up on plan.
Step 8
The first sends go to your most engaged subscribers. Klaviyo's guide says brands that send more than once a week should send their first 2 to 3 campaigns to an engaged list or segment.
Step 9
Old automations and forms switch off, so nobody gets two welcome emails. The old account stays open until its reports are exported, then it closes.
Each migration route changes different things on the way. The cards below say why brands take each route, what is rebuilt and where the platform's own tools help.
Brands leave Klaviyo for Omnisend to lower their platform bill, and move from Omnisend to Klaviyo for deeper segmentation and reporting. Omnisend's migration team moves flows, lists, templates and the whole setup in 5 days, free for brands moving from Klaviyo, as Omnisend's migration page said on 6 November 2026. We run both platforms. Our Omnisend vs Klaviyo comparison sets the features side by side. Our Klaviyo alternatives list ranks the platforms stores move to.
Brands make a Mailchimp to Klaviyo migration for segments built on store data and flows that go beyond simple autoresponders. Klaviyo's Mailchimp integration turns audiences into lists and brings over unsubscribes. Tags do not sync, so we import them as profile properties from a CSV, and drag-and-drop templates are rebuilt by hand. The Mailchimp forms and automations switch off once the Klaviyo flows are live, so nobody gets two welcome emails. Our Klaviyo vs Mailchimp comparison sets the two platforms side by side.
Brands move from Mailchimp to Omnisend for flows built on store data, with email and SMS in one simpler account. Omnisend's team moves the account: its help center offers a free Kickstart migration for stores with more than 250 contacts (checked on 6 November 2026). Brands that switch through us also get Omnisend's partner offer: 30% off the first 12 months of Omnisend and a free migration handled by Omnisend (checked on 5 November 2026).
Yotpo retired its email and SMS tools at the end of 2025. For moves to Klaviyo there is Klaviyo's free Yotpo email and SMS migration app, checked on 6 November 2026. We moved Lone Wolf Paintball from Yotpo to Omnisend, as Omnisend's story describes. Our Yotpo migration checklist lists every step.
SMS subscribers move with their consent proof: when, where and with what wording each person opted in. We plan quiet hours, keywords such as STOP and the sending number. A new toll-free number must be verified first, which Klaviyo says takes about 2 to 5 business days (checked on 6 November 2026). See Attentive vs Omnisend and our SMS marketing service.
Most other tools export contacts as a CSV file, and we map its consent fields and suppressions before the import. Klaviyo publishes guides for Mailchimp, Constant Contact, Campaign Monitor, HubSpot, Listrak, Sailthru and Salesforce Marketing Cloud, and we follow them where they exist. For a move to Brevo, see our Brevo agency page. On WooCommerce or Magento, the new platform's plugin or module goes in before the import; our WooCommerce and Magento pages show how each one connects.
Consent records must move with every contact, and suppressions must move before anyone is mailed. Three rules matter most in a migration.
The GDPR says a business must be able to show that a person consented, so each contact moves with its opt-in source, date and double opt-in status. In the US, the CAN-SPAM Act does not require opt-in for email, but it requires honoring opt-outs within 10 business days.
Unsubscribes, hard bounces and spam complaints go into the new account before any subscriber, so the new platform never mails someone who left. Klaviyo's guide says to check which suppressions your old platform's integration transfers, and to upload the rest.
Under the Telephone Consumer Protection Act (TCPA) rules, marketing texts sent with an autodialer need prior express written consent. Klaviyo says email consent does not count as SMS consent, and Omnisend asks for documented proof of consent for imported contacts.
Enflow Digital is a marketing agency, not a law firm. Your lawyer approves your consent wording and policies.
Founders and marketing leads of ecommerce brands describe the flows and emails we built for them. Renee Moore of Cinch Skin came to us because Omnisend recommended us.
Founder of Cinch Skin
Omnisend recommended I give Enflow Digital a try and they did not disappoint. They worked quickly and efficiently and made some great changes to our flows and promotional emails. They also understood our brand perfectly (both tone of voice and creative) I would recommend this team for anyone wanting a stress free partnership. Thank you!
CMO of Two Wheels Empire
We've just launched our automations and they are already bringing us sales! The team displayed an impressive level of expertise and professionalism throughout our collaboration. Communication with their team was always smooth and on point. Would recommend to anyone!
Founder of The Truth Beauty Company
We hired Enflow to audit and improve our automations and the rates tell the story! And a happy story it is! We have seen a lot of growth - and recognize the potential to see more growth. Julius and his team work quickly and provide very robust reports! 1000% would I work with Enflow again!
Founder of Alkaline Herb Shop
Enflow Digital is the best company I have ever worked with. They are professional and on top of everything. They also create the most beautiful emails and have a lot of experience doing the work they do. I love that they do the research to help me come up with the best campaigns and that they have taken the time to learn our store. The emails they craft are usually filled with upsells, and the visuals are unparalleled.
Founder and CEO of Cocoon Apothecary
The Enflow Digital Team is dependable, professional, and provides top notch content. They took so much work off our plates by managing our email marketing and got us amazing results.
A migration runs inside a monthly retainer or as a stand-alone project. Our retainers run from $2,000 to $10,000+ per month, and a stand-alone move is quoted per project after the audit. Brands that switch to Omnisend through us also get Omnisend's partner offer: 30% off the first 12 months of Omnisend and a free migration handled by Omnisend (checked on 5 November 2026). The new platform bills you separately.
$2,000 to $10,000+ per month
Our monthly fee when the migration runs inside a retainer.
How many contacts move and how complete their consent records are.
How many flows need rebuilding and testing.
How many templates, sign-up forms and pop-ups are rebuilt.
Whether SMS subscribers and a sending number move too.
How many store, review, loyalty and subscription apps are reconnected.
Our email marketing agency pricing guide explains monthly and project fees.
We run a migration in five steps, and you approve each one before the next starts. A typical migration takes 1 to 4 weeks, depending on scope and complexity, and the audit sets your date.
We read your account: revenue by flow and campaign, list health, consent records and integrations. You approve the migration plan and the cutover date it sets.
We set up the new account and connect your store. You or your developer add the DNS records we send, and you approve the platform plan, which the platform bills to you.
We move suppressions, then subscribers with their consent records. You approve the list of contacts that move and the ones left behind.
We rebuild the segments, flows, templates and forms and test them while your old platform keeps sending. You approve each flow before it goes live.
We send to engaged subscribers first, then switch off the old automations and forms. You approve the cutover once the written criteria are met.
Do it yourself when the account is small and you have the time. Use the platform's migration team when you want the data moved for free. Hire Enflow Digital when you want one team to plan, rebuild, test and warm up the whole move.
Three ways to move email platforms
| What to compare | Doing it yourself | The platform's migration team | Enflow Digital |
|---|---|---|---|
| Contacts and suppressions | You export, clean and import them | Omnisend's team moves your lists. Klaviyo gives you integrations and CSV imports to run | Suppressions first, then subscribers, checked against the old account |
| Consent proof | You map the consent fields | Klaviyo says its Yotpo app moves contacts and SMS opt-ins. Omnisend's help center says to migrate only opted-in contacts and check their consent source | Opt-in source, date and double opt-in status kept on each contact |
| Segments | You rebuild them | Omnisend's team rebuilds them by hand | Rebuilt in the new data model |
| Flows | You rebuild and test them | Omnisend's team rebuilds automations by hand. Klaviyo's guide says to recreate them as flows yourself | Rebuilt highest earners first and tested before launch |
| Templates and forms | You rebuild them | Omnisend's team rebuilds them by hand | Rebuilt, and the old form code removed from your site |
| Integrations and tracking | You connect them | Omnisend says its team moves the whole setup | Store, apps, onsite tracking and UTM tags reconnected and checked |
| Warm-up plan | You plan it from the platform's guide | Klaviyo's guide says brands that send more than once a week should send their first 2 to 3 campaigns to engaged subscribers | A written plan, engaged subscribers first |
| Parallel run and cutover | You decide when to switch | Klaviyo's guide says to turn off the old automations once the new flows are live. Omnisend's page does not say | Both accounts run side by side until the written criteria are met |
| Who is accountable | You | The platform, for the part it moves | Enflow Digital, for the whole move |
| What it costs | Your team's time | Omnisend: free for stores with more than 250 contacts, as its help center says, and 5 days for the move, as its migration page says. Klaviyo: a free Yotpo migration app and a recorded onboarding webinar, with more onboarding on larger plans | Our fee, quoted after the audit, plus your platform plan |
The platform cells come from Omnisend's migration page and Omnisend's migration help article, read on 6 November 2026, and from Klaviyo's migration guide and Klaviyo's Yotpo migration page, read on 6 November 2026. Platforms change their offers, so check their pages before you decide.
Move to Klaviyo for detailed segmentation, to Omnisend for a simpler account, or to Brevo for a large list on a tight budget. We run all three, so the audit ends with one recommendation for your store.
Klaviyo suits stores with large catalogues that segment by product, browsing and order history in detail, with SMS in the same account.
Omnisend suits small and mid-sized stores that want email, SMS and push in one simpler account. Our Omnisend vs Klaviyo comparison calls it a cost-effective choice for those stores.
Brevo suits stores with a large list that send a few campaigns a month, because Brevo prices mainly by monthly email volume, with contact caps only on its smallest plans. It also sends WhatsApp messages.
Enflow Digital's migration service does not fit four kinds of buyers.
Karolina Uvarkina and Julius Urbanavicius run Enflow Digital every day. Our team of project managers, copywriters and designers does the account work.
Karolina Uvarkina
Co-Founder, Head of Email
Karolina Uvarkina built and exited ecommerce businesses before Enflow, leading their marketing: testing and refining what brought in leads and sales. Karolina has worked in email since 2018 and now leads email at Enflow Digital.
Meet KarolinaLinkedIn: Karolina UvarkinaInstagram: Karolina Uvarkina
Julius Urbanavicius
Co-Founder, Head of Growth
Julius Urbanavicius turned a weekend hobby into full-time work, building and exiting ecommerce brands that served tens of thousands of customers. Julius has worked in email since 2018 and leads growth at Enflow Digital.
An ESP migration is a move from one email service provider (ESP) to another, such as from Mailchimp to Klaviyo. It covers subscribers and their consent, suppressions, segments, flows, templates, forms and integrations, and often SMS. Contacts are imported, but segments and flows are rebuilt in the new platform, and the new sending domain needs a warm-up before full-volume sends.
Deliverability can drop after a switch, but a planned move keeps it steady. The usual causes are inactive contacts imported in bulk, suppressions left behind and full-volume sends from a cold sending domain. We import suppressions first, authenticate the new domain and send to engaged subscribers first. Klaviyo's guide says brands that send more than once a week should send their first 2 to 3 campaigns to an engaged list or segment.
An Enflow Digital email platform migration typically takes 1 to 4 weeks, depending on scope and complexity. Five things move a project toward the short or the long end: the number of contacts and the quality of their consent records, the flows to rebuild, the templates and forms, SMS, and the integrations. The audit sets your date. For its own team's data move, Omnisend says it needs 5 days, as its migration page said on 6 November 2026.
Yes. Your old platform keeps sending campaigns and flows while we build and test the new account. Both run side by side until the cutover date, when the old automations switch off, so no subscriber gets the same email twice. Klaviyo's guide says to turn off the old automations once the new flows are live.
SMS subscribers move with their consent record: the date, the form and the wording each person agreed to. Email consent does not cover SMS, so a contact with email consent only moves as an email subscriber. We also plan the sending number: keeping it needs a transfer, and a new toll-free number must be verified before it sends.
To migrate from Mailchimp to Klaviyo, connect Klaviyo's Mailchimp integration, which turns audiences into lists and brings over unsubscribes. Then import tags as profile properties, rebuild templates and forms, and recreate automations as Klaviyo flows. Switch off the Mailchimp automations once the flows are live, and send to engaged subscribers first. The Mailchimp to Klaviyo route has the details.
Move from Klaviyo to Omnisend when your Klaviyo bill has outgrown what your flows bring in and Omnisend covers the features you use. Stay on Klaviyo if you rely on its deeper segmentation and reporting. Brands that switch to Omnisend through us get 30% off the first 12 months of Omnisend and a free migration handled by Omnisend. We run both platforms, and our Omnisend vs Klaviyo comparison sets the features side by side.
Yotpo retired its email and SMS tools at the end of 2025, so brands that sent from Yotpo need a new platform. To move from Yotpo, export subscribers with their consent records, then rebuild flows, forms and SMS in Klaviyo or Omnisend. For moves to Klaviyo there is Klaviyo's free Yotpo email and SMS migration app, checked on 6 November 2026. We moved Lone Wolf Paintball from Yotpo to Omnisend, as Omnisend's story describes.
Yes, when your store sells through flows a newsletter tool cannot run well, such as abandoned cart, browse and post-purchase emails built on order data. A large list costs more on platforms that price by contacts or profiles, so we remove contacts who never open before the move. Ask for a cost comparison of the cleaned list before you decide.
Keep email and SMS consent separate, move the suppressions for both channels first, and rebuild each flow so it chooses between an email and a text. Plan both channels on one calendar, so a shopper does not get the same offer twice. Verify the sending number before the first text, and switch off the old SMS flows on the cutover date.
Yes, if the move and the warm-up can finish before your Black Friday sends begin. An Enflow Digital migration typically takes 1 to 4 weeks, and a new sending domain needs a warm-up, because Black Friday volume from a cold domain risks the spam folder. If time is short, we keep Black Friday on your current platform and move after the peak.
An Enflow Digital migration runs inside a monthly retainer or as a stand-alone project. Our retainers run from $2,000 to $10,000+ per month, and a stand-alone move is quoted per project after the audit. Brands that switch to Omnisend through us also get 30% off the first 12 months of Omnisend and a free migration handled by Omnisend. The new platform bills you separately. See what a migration costs for the factors.
These guides cover moving off Yotpo, choosing between platforms and keeping deliverability through a move.
Step-by-step checklist for migrating off Yotpo Email & SMS while preserving automations, deliverability, consent records, and SMS number strategy.
Yesterday, Yotpo’s CEO Tomer Tagrin sent an urgent email to merchants: Yotpo will […]
Compare Attentive and Omnisend for Yotpo users: migration approach, pricing, compliance, and which fits SMS-first enterprise programs versus budget-friendly multichannel ecommerce.
Introduction As a partner agency to multiple email marketing platforms, we frequently […]
Most email deliverability issues come from four causes: broken authentication, a damaged sender reputation, a list with bad addresses, or content that looks like spam.
Tell us what you sell, which email platform you use and what you want to fix, and we will reply by email.
Book a free strategy session. We look at your current platform, your list and your flows, and tell you what a move would take.
