--- title: Mailchimp to HubSpot Migration — Draidel description: Mailchimp to HubSpot migration. Separate audiences collapse into one contact database, tags and merge fields become properties, and unsubscribe state is reconciled before the first send. --- Draidel. **000***%* We build companies — Edition 2026 [Skip to content](https://www.draidel.com/mailchimp-to-hubspot-migration#main-content) [Draidel.](https://www.draidel.com/) 01[Menu](https://www.draidel.com/mailchimp-to-hubspot-migration#k-menu) Miami · Six markets · Since 2015 [*01*Services](https://www.draidel.com/services)[*02*Industries](https://www.draidel.com/industries)[*03*HubSpot](https://www.draidel.com/hubspot)[*04*Platforms](https://www.draidel.com/platforms)[*05*About](https://www.draidel.com/about)[*06*Events](https://www.draidel.com/events)[*07*Contact](https://www.draidel.com/contact) [Services](https://www.draidel.com/services) - [Go To Market](https://www.draidel.com/go-to-market) - [RevOps](https://www.draidel.com/revops) - [AI & Data](https://www.draidel.com/ai-data) - [Engineering](https://www.draidel.com/engineering) [Industries](https://www.draidel.com/industries) - [SaaS](https://www.draidel.com/industries/saas) - [Law Firms](https://www.draidel.com/industries/law-firms) - [Mass Torts](https://www.draidel.com/industries/mass-torts) - [AI](https://www.draidel.com/industries/ai) - [Home Care Agencies](https://www.draidel.com/industries/home-care-agencies) - [Health Care](https://www.draidel.com/industries/health-care) - [BPO](https://www.draidel.com/industries/bpo) - [Venture Capital](https://www.draidel.com/industries/venture-capital) - [View all→](https://www.draidel.com/industries) [HubSpot](https://www.draidel.com/hubspot) - [Audit](https://www.draidel.com/hubspot-audit) - [Onboarding](https://www.draidel.com/hubspot-onboarding) - [Consulting](https://www.draidel.com/hubspot/consulting) - [Implementation](https://www.draidel.com/hubspot-implementation) - [Migration](https://www.draidel.com/hubspot/migration) - [Integration](https://www.draidel.com/hubspot/integration) - [Development](https://www.draidel.com/hubspot/development) - [Training](https://www.draidel.com/hubspot/training) - [Pricing](https://www.draidel.com/hubspot-pricing) [Platforms](https://www.draidel.com/platforms) - [Salesforce](https://www.draidel.com/salesforce) - [NetSuite](https://www.draidel.com/netsuite) - [Microsoft Dynamics](https://www.draidel.com/microsoft-dynamics) - [ClickUp](https://www.draidel.com/clickup) - [Intercom](https://www.draidel.com/intercom) - [Notion](https://www.draidel.com/notion) - [Snowflake](https://www.draidel.com/snowflake) - [Databricks](https://www.draidel.com/databricks) - [View all→](https://www.draidel.com/platforms) Company - [About](https://www.draidel.com/about) - [Ventures](https://www.draidel.com/ventures) - [Case studies](https://www.draidel.com/case-studies) - [Events](https://www.draidel.com/events) - [Partners](https://www.draidel.com/partners) - [Compliance](https://www.draidel.com/compliance) - [Contact](https://www.draidel.com/contact) 66 West Flagler St, Miami [Start a project →](https://www.draidel.com/contact) [Close](https://www.draidel.com/mailchimp-to-hubspot-migration#site-header) Migration # *Mailchimp* to HubSpot migration. Audiences become one database. Mailchimp bills per audience and teams respond by keeping several. Collapsing them into one HubSpot contact database is the migration, and it is where every duplicate you have been paying for twice finally surfaces. MailchimpAudiencesTagsConsent The problem ## Three audiences, one person, three *opinions.* The same customer sits in the newsletter audience, the customer audience and the webinar audience with three different name spellings and two different unsubscribe states. Nobody notices while each audience sends separately. Everybody notices the week after they are merged. ## Unsubscribed over here. Subscribed over *there*. Mailchimp — the split audience What actually breaks ## What a CSV export will not tell you. ### Unsubscribe state has to win If a person unsubscribed in one audience and not another, the merged record must honour the unsubscribe. This is a compliance decision before it is a data one, and it is the first thing we reconcile. ### Tags are not a data model Mailchimp tags carry everything the schema could not: source, interest, customer status, event attendance. They become a mix of properties, lists and lifecycle stages rather than four hundred tags carried across intact. ### Merge fields differ per audience Each audience has its own merge fields, often with the same label meaning different things. Mapping them into one property set is where the actual thinking happens. ### Classic automations and customer journeys Journeys rebuild as workflows. The branching translates; the trigger semantics and the way Mailchimp handles re-entry do not, so each journey gets walked rather than copied. ### Ecommerce data if it is connected A Mailchimp store connection carries order history that drives segmentation. That either moves to a HubSpot ecommerce integration or the segments stop working. ### Sending reputation A new sending domain with no history sends a large list for the first time and inbox providers notice. Domain authentication and a warming plan are part of the project, not an afterthought. How it runs ## The sequence, start to cutover. 01 ### Discovery Object counts, custom fields, automation and the integrations that will break on the way out, read from the source system rather than from a questionnaire. 02 ### Mapping Field by field, including what will not carry across, agreed and signed before anyone exports anything. 03 ### Dry run A complete rehearsal into a sandbox portal, reconciled against source counts so the gaps surface a month early rather than on cutover night. 04 ### Automation rebuild Workflows, sequences and routing rebuilt to the new model rather than transliterated from the old one, which is how a migration inherits a decade of workarounds nobody remembers writing. 05 ### Cutover A dated switch with the legacy system read-only for a defined window, and a rollback that was tested rather than assumed. 06 ### Post-migration support A named engineer through the first full reporting cycle, which is when the questions actually arrive. Where it usually goes wrong ## The first send goes to the *duplicates.* Merging audiences without a deduplication rule agreed in advance produces a database where a good customer receives the same campaign twice and an unsubscribed one receives it at all. We agree the matching rule, run it in the dry run, and show you the collisions before a single email goes out. Frequently asked ## What people ask before they *commit.* Will our unsubscribes carry across? Yes, and where a person appears in several audiences with conflicting states, the unsubscribe wins. That is both the legally safe answer and the right one. What happens to our tags? They get read, grouped and translated into properties, lists and lifecycle stages. Carrying tags across as tags is technically possible and almost always the wrong call, because it moves the mess rather than fixing it. Do our email templates come across? Not directly, and you would not want them to. Templates get rebuilt in HubSpot so they use personalisation tokens and the drag-and-drop editor properly. It is usually a couple of days of work and the result is easier to maintain. How long does it take? Two to five weeks for most Mailchimp accounts, which makes it one of the quicker migrations. Deduplication and consent reconciliation take the time, not the export. Will HubSpot cost more than Mailchimp? On licence, usually. HubSpot bills on marketing contacts, so part of the migration is deciding who is actually a marketing contact — which is a useful exercise regardless, and often removes a third of the list. Next ## Where people go from here. ### [Every migration we run The full list of systems we move people off, and what each one costs in rebuild rather than in export.](https://www.draidel.com/hubspot/migration) ### [HubSpot marketing automation What replaces the journeys, built to a model rather than assembled from tags.](https://www.draidel.com/hubspot-marketing-automation) ### [HubSpot data cleanup and deduplication Deduplication and hygiene as its own engagement when the list is the problem.](https://www.draidel.com/hubspot-data-cleanup) ### [ActiveCampaign to HubSpot migration The same move for teams who already outgrew Mailchimp once.](https://www.draidel.com/activecampaign-to-hubspot-migration) Operators we build with ![Thales](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/thales.svg)![Imperva](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/imperva.png)![Cameo](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/cameo.png)![Moz](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/moz.png)![APMEX](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/apmex.png)![RaySecur](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/raysecur.svg)![Bolster](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/bolster.png)![Huify](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/huify.svg)![Regency Health Care](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/regency.svg)![Niche Academy](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/niche-academy.svg)![Thales](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/thales.svg)![Imperva](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/imperva.png)![Cameo](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/cameo.png)![Moz](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/moz.png)![APMEX](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/apmex.png)![RaySecur](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/raysecur.svg)![Bolster](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/bolster.png)![Huify](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/huify.svg)![Regency Health Care](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/regency.svg)![Niche Academy](https://www.draidel.com/hubfs/raw_assets/34/public/@projects/draidel-2026/draidel-2026-theme/assets/logos/niche-academy.svg) Start a project ## One database, one *consent* state. ## Tell us what you are running What the system does today, where it breaks, and when it has to work. An engineer reads it — you get an answer inside one business day, not a sequence. 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