ChatGPT SearchOct 1, 2026
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Data as of Oct 10, 2026A topic in Data & SaaS Migration Services.
Reviewed by Dimitry Apollonsky
AI summary
Braze holds a narrow lead over HubSpot for onboarding and email marketing data migration support. Salesforce is the usual answer when buyers migrate specifically from batch tools to journey platforms.
dedicated onboarding, implementation, and customer journey platform migration services
certified implementation partners assisting with platform onboarding and data migration
professional services handling customer journey platform onboarding and data migration
dedicated implementation and onboarding teams that assist with data migration
legacy email environments transitioning data into advanced customer journey platforms
Mentioned in · Jul 5 – Oct 10, 2026
ChatGPT SearchOct 1, 2026
Yes. If by “migration” you mean moving contacts, consent/suppression data, segments, templates, automations/flows, and tracking from one email platform to another, there are both specialist agencies and platform-provided migration services.
Here are some options I found:
| Service | Best fit | What they handle |
|---|---|---|
| EmailCurve | E-commerce brands moving to Klaviyo | Data cleanup, flow rebuilding, deliverability/DNS, parallel testing and cutover. They say their typical migration takes ~4 weeks. |
| Threadpoint | Klaviyo migrations | Migrations from Mailchimp, Omnisend, Drip, HubSpot, Constant Contact, Brevo, ActiveCampaign, Yotpo and others; includes rebuilding flows rather than simply copying them. |
| Essence of Email | Larger/complex retention programs | ESP migrations involving Klaviyo, Customer.io, HubSpot, Braze and others, with emphasis on preserving data, flows and revenue continuity. |
| SmartMail | E-commerce → Klaviyo | Done-for-you migration including subscriber data, segmentation, flows, templates, integrations, list cleaning and IP warming. |
| Email Marketing Genie | Smaller teams wanting ongoing help | Migration to Klaviyo plus data, segments, flows, templates and deliverability setup. |
| Email Task Desk | Agencies/companies with multiple ESPs | Platform-to-platform migrations involving data transfer, automation rebuilds, template recreation and post-migration QA; supports platforms including Salesforce Marketing Cloud, Marketo, Klaviyo, HubSpot, Mailchimp, Braze and Customer.io. |
| BEMCo. | Multi-platform migrations | ESP migration planning, sequencing, QA and post-launch stabilization across Klaviyo, HubSpot, Mailchimp and ecommerce platforms. |
If you're moving to Klaviyo, Klaviyo provides migration documentation and built-in integrations for several ESPs, including Mailchimp, Constant Contact, Campaign Monitor, HubSpot, Listrak, Sailthru and Salesforce Marketing Cloud.
The important part is that a migration isn't just exporting a CSV. Klaviyo specifically recommends carrying over things such as engagement information and suppression/unsubscribe data, while also rebuilding autoresponders/flows and switching signup forms and integrations.
If you tell me your current platform → new platform (e.g. Mailchimp → Klaviyo, HubSpot → Customer.io, etc.), plus roughly how many contacts you have, I can search for 3–5 migration providers that specifically support that combination and compare their services and pricing where available.
Google AI ModeOct 1, 2026
Most modern email marketing platforms (like Mailchimp, Omnisend , or ActiveCampaign ) handle data migration internally via CSV list uploads and native onboarding support rather than requiring third-party inbox migration tools. When you switch marketing systems, you are moving subscriber lists, tags, custom fields, and templates rather than employee mailboxes.
ChatGPT SearchOct 10, 2026
Several companies offer email marketing migration services, ranging from hands-on migration teams that transfer subscriber lists and campaign assets to specialist providers that move data between platforms.
The best choice depends on whether you need to move just your email lists and subscriber data or also preserve tags, custom fields, consent and unsubscribe statuses, templates, automations, and campaign history.
1. ActiveCampaign
(Full-service option)
Offers onboarding and migration assistance for qualifying customers moving from platforms such as Mailchimp, HubSpot, and Keap. Migration can cover contact lists, forms, templates, and automations, subject to eligibility and scope limits. Its standard complimentary migration covers up to 10 objects for qualifying plans.
Google AI ModeOct 10, 2026
Google AI ModeSep 27, 2026
Migrating from a legacy batch-and-blast tool to a modern customer journey platform requires clean data mapping, subscriber status management (opt-outs, bounces), and historical engagement transfer. Depending on your team's internal resources and budget, a few different roles or entities handle this transition:
To help narrow down the best path, could you tell me:
ChatGPT SearchSep 27, 2026
Usually, data migration is a shared responsibility, with the hands-on work led by one of these groups:
If you share your current platform and your destination platform , I can give you exact steps or check if a direct automated importer is available.
Best for: businesses that are moving to ActiveCampaign and want help beyond a basic CSV import.
2. Klaviyo
Provides platform-specific migration guides and integrations for moving contacts from providers such as Mailchimp, Constant Contact, HubSpot, and Salesforce Marketing Cloud. It supports contact imports and offers guidance for transferring subscription data and preparing lists for sending.
Best for: ecommerce businesses moving to Klaviyo, particularly those needing email and SMS subscriber data transferred.
3. RadarSend
Offers a dedicated migration service for customers moving from providers including Mailchimp, ActiveCampaign, Klaviyo, Brevo, HubSpot, and others. Its intake process considers list size, automations, integrations, and the desired migration schedule.
Best for: businesses looking for a migration-focused provider that can plan a broader platform transition.
4. Just Email
Offers a paid platform migration service advertised at $199 on its migration product page. Listed migration items include lists, forms, and templates, with additional arrangements available for forms and popups. Confirm the current price and scope before purchasing.
Best for: smaller migrations where you need help transferring core email marketing assets.
5. Quazzlient
Works with ActiveCampaign on its migration solution for eligible customers moving from Mailchimp. The process can transfer supported lists, contacts, subscription statuses, tags, custom fields, forms, campaigns, and automations into ActiveCampaign. This is a partner-powered solution within ActiveCampaign, rather than a general-purpose standalone migration service.
Best for: Mailchimp customers switching specifically to ActiveCampaign.
| Your situation | Recommended starting point |
|---|---|
| Moving to ActiveCampaign | ActiveCampaign's migration team |
| Moving to Klaviyo | Klaviyo's migration resources |
| Want a dedicated migration service | RadarSend |
| Need a smaller, straightforward transfer | Just Email |
| Moving from Mailchimp to ActiveCampaign | ActiveCampaign + Quazzlient |
A successful migration should preserve more than just email addresses. Ask each provider whether it can transfer:
Also ask whether the service includes data deduplication, testing, and post-migration validation. Historical engagement data and complex automations may not transfer completely between platforms.
The most important question is: Which email marketing platform are you moving from, and which one are you moving to?
For example, Mailchimp → HubSpot, Constant Contact → ActiveCampaign, or an older proprietary system → a new platform. With those details, I can identify the providers that support your specific migration and compare their services and pricing.
When transferring email marketing lists, subscriber data, templates, and automated workflows to a new platform, the service options generally fall into two categories: in-house migration support teams provided directly by the destination platforms, or third-party digital marketing/consultancy agencies that specialize in full-service platform-to-platform transitions.[](https://www.activecampaign.com/blog/esp-migration-guide)[[2](https://www.klaviyo.com/blog/bronto-migration)](https://www.klaviyo.com/blog/bronto-migration)
Many major Email Service Providers (ESPs) provide built-in import tools, documentation, or dedicated migration assistance for qualifying or higher-tier accounts.[](https://www.activecampaign.com/blog/esp-migration-guide)
If your migration involves complex multi-channel setups, intricate custom automations, historical revenue attribution logic, or clean-slate data architecture, specialized agencies handle the heavy lifting:[](https://stickydigital.io/blogs/sticky-digital-services/best-agency-to-migrate-to-klaviyo)[[2](https://www.klaviyo.com/blog/bronto-migration)](https://www.klaviyo.com/blog/bronto-migration)
To help me recommend the best route or specific partner for your move, could you tell me:
The key is that moving from batch-and-blast → customer journeys isn't just a contact-file transfer. You usually need to migrate/rethink the data model, behavioral events, segments, consent/suppression status, integrations, and journey triggers as well.
If you tell me the platform you're leaving and the platform you're moving to (e.g. Mailchimp → Braze, Marketo → Salesforce Marketing Cloud, etc.), I can identify the specific migration teams/partners that support that combination.
