CRM migration

Migrate from Propeller CRM to Mailchimp

Field-level mapping, validation, and rollback between Propeller CRM and Mailchimp. We move data and schema; workflows are rebuilt natively in Mailchimp.

Propeller CRM logo

Propeller CRM

Source

Mailchimp

Destination

Mailchimp logo

Compatibility

50%

4 of 8

objects map 1:1 between Propeller CRM and Mailchimp.

Complexity

CModerate

Timeline

2-3 weeks

Rollback included Accuracy guarantee Field-level validation

Overview

What this migration involves

Propeller CRM to Mailchimp is a rescue migration from a platform that shut down permanently in December 2019. There is no live API, no admin console, and no support team to contact. Everything we work with comes from the shutdown data export archive that Propeller produced before the February 2020 data-request deadline. Mailchimp is an email service provider (ESP) with a subscriber-centric audience model, not a sales CRM with pipeline management. Contacts and Companies from Propeller map to Mailchimp subscribers, with company affiliation stored as merge fields and tags. Deals, Pipeline Stages, and Owner assignments have no direct Mailchimp equivalent — we preserve these as text notes and tag values on the subscriber record so the customer retains the context. Email Campaigns from Propeller are recreated as historical reference notes and, where contact lists are intact, mapped to Mailchimp audiences. Email Templates migrate as Mailchimp template content. We do not migrate Activity history (opens, clicks, replies, meeting logs) because Propeller's Gmail extension did not expose these in the standard export. Workflows, automations, and sequence cadences do not migrate and are documented separately for the customer's admin to rebuild in Mailchimp's automation builder.

Field-level fidelity

Every standard and custom field arrives verified.

Schema-aware mapping

AI proposes the map; you confirm before any record moves.

Relationships preserved

Parent–child, lookups, and ownership stay linked.

Full activity history

Calls, emails, meetings — with original timestamps.

Attachments & notes

Documents, uploads, and inline notes move with the record.

Why teams make this switch

Two sides of the same decision

Leaving

Propeller CRM logo

Propeller CRM

What's pushing teams away

  • Reporting functionality was consistently cited as underdeveloped — customers wanted more granular pipeline analytics and exportable dashboard views.
  • Propeller CRM ceased operations on December 15, 2019, leaving hundreds of customers without a platform and forcing urgent migration to alternatives.
  • The platform lacked enterprise-scale features, making it unsuitable as teams grew beyond the small-business segment it was designed for.
  • Contact and deal volumes were uncapped on the single tier, but the absence of advanced segmentation or custom objects frustrated more complex sales processes.

Choosing

Mailchimp logo

Mailchimp

What's pulling them in

  • Generous free tier with up to 500 contacts allows small teams to validate email marketing before committing to a paid plan.
  • Intuitive drag-and-drop email builder and 130+ templates let non-technical users produce professional campaigns without HTML or CSS knowledge.
  • 300+ native integrations, especially Canva and Shopify, make it easy to connect existing tools without custom development work.
  • Detailed open-rate, click-through, and campaign analytics give small businesses actionable insights without a dedicated marketing team.
  • One-platform consolidation of email campaigns, automations, landing pages, and ads reduces tool sprawl for lean marketing teams.

Object mapping

How Propeller CRM objects map to Mailchimp

Each row shows how a Propeller CRM object lands in Mailchimp, including any object-level transformations, lookup resolution, or schema-design dependencies.

Typical mapping — final map is confirmed during the sample migration step.

Propeller CRM

Contact

maps to

Mailchimp

Subscriber (Mailchimp Audience)

1:1
Fully supported

Propeller Contact records map directly to Mailchimp subscribers in the destination audience. We preserve first name, last name, email address, phone number, and company name as standard Mailchimp merge fields (FNAME, LNAME, EMAIL, PHONE, COMPANY). Any Propeller custom contact properties migrate as additional merge fields or subscriber tags. Opt-in status is inferred as subscribed for all exported contacts unless the Propeller record explicitly noted an unsubscribed or bounced status, which we carry over as the Mailchimp Subscribed status field.

Propeller CRM

Company

maps to

Mailchimp

Subscriber Merge Field + Tags

1:many
Fully supported

Mailchimp has no dedicated Company or Account object. Propeller Company records are merged into the Contact migration by company name, with each subscriber receiving a COMPANY merge field carrying the original company name. If a Propeller Company record was linked to multiple Contacts, those contacts receive a matching tag (e.g., 'Company: Acme Corp') so the customer can build Mailchimp segments by company affiliation post-migration. We flag any duplicate company name variations for customer confirmation before encoding.

Propeller CRM

Deal

maps to

Mailchimp

Subscriber Tags + Notes Field

lossy
Fully supported

Mailchimp has no deal or opportunity object. Propeller Deals are preserved as text-encoded tags on the linked subscriber record (e.g., 'Deal: $4,500 Enterprise Q1') and in a MERGE_NOTES or CUSTOM_NOTES merge field carrying deal name, amount, and stage as plain text. The customer should understand that these are reference annotations, not live pipeline records — Mailchimp cannot track deal progress, stage transitions, or owner assignments natively.

Propeller CRM

Pipeline Stage

maps to

Mailchimp

Subscriber Tags (text-encoded)

lossy
Fully supported

Propeller pipeline stage names (e.g., 'Proposal Sent', 'Awaiting Finance', 'Verbal Yes') have no Mailchimp equivalent. We encode the final stage value as a tag on the associated subscriber (e.g., 'Stage: Proposal Sent') and in the deal reference note. Stage ordering logic from Propeller is not preserved because Mailchimp has no sequence concept for subscriber attributes. Stages requiring manual placement confirmation during scoping are flagged in the mapping document before migration.

Propeller CRM

Email Campaign

maps to

Mailchimp

Audience Reference Notes + Campaign Inventory

lossy
Fully supported

Propeller Email Campaigns are not directly importable into Mailchimp because Mailchimp campaigns are tied to send operations on its platform. We extract campaign names, associated contact lists (by email address match), send dates, and open/click statistics from the Propeller archive and document them as a written campaign inventory. If the Propeller contact lists are intact and still valid, we recreate them as Mailchimp audiences or static segments so the customer can reference historical send history alongside the new Mailchimp campaign data.

Propeller CRM

Email Template

maps to

Mailchimp

Email Template (Mailchimp)

1:1
Fully supported

Propeller email templates with merge field names and HTML body content migrate to Mailchimp template format. We extract template subject lines, body HTML, and merge field placeholders from the archive and create Mailchimp Templates via the Mailchimp API. Plain-text variants are preserved if present in the Propeller export. The customer should review templates in Mailchimp's template editor before sending because rendering differences between Propeller's email renderer and Mailchimp's may affect layout.

Propeller CRM

Owner / User

maps to

Mailchimp

Subscriber Tags (text-encoded)

1:1
Fully supported

Propeller user accounts tied contacts and deals to individual sales reps by email address. Mailchimp subscribers have no owner field. We capture the original owner email as a tag on each subscriber (e.g., 'Owner: [email protected]') and in the deal reference note for contacts with associated deals. If the original Propeller owner email is no longer active, this tag still preserves the attribution context for the customer's admin.

Propeller CRM

Activity (opens, clicks, replies, meetings)

maps to

Mailchimp

Not migrated

1:1
Fully supported

Propeller's Gmail extension tracked per-contact activity logs (email opens, link clicks, replies, meeting scheduling) as live event data inside the platform. These were not included in the shutdown data export package. We cannot reconstruct the activity timeline from the Propeller archive and do not falsely promise this data as part of the migration. Mailchimp will begin fresh campaign tracking from the date of migration onward.

Gotchas + challenges

What specifically takes care here

Platform-specific issues from each side, plus the pair-specific challenges that don't show up on either platform's page on its own.

Propeller CRM logo

Propeller CRM gotchas

High

Platform shutdown — no active API or support

High

Activity history not included in standard export

Medium

Deal stage mapping requires manual review

Medium

Owner/user assignment requires remapping

Mailchimp logo

Mailchimp gotchas

High

Contact count includes unsubscribed and non-subscribed records

High

Automation workflows cannot be exported

Medium

Account suspensions trigger silently during migration

Medium

Template HTML is Mailchimp-specific and may not render in other platforms

Medium

E-commerce data requires active store connection

Pair-specific challenges

  • Platform shutdown — data sourced from archive only

    Propeller CRM shut down on December 15, 2019. There is no live API, no admin console, and no support team. Customers had until February 15, 2020 to request a data export from [email protected]. If a customer did not submit a request during that window, their Propeller data is likely unrecoverable. We work exclusively with the archive file that was produced at shutdown time. We cannot request a fresh export, regenerate records, or fill gaps from the source platform. The completeness of the migration is bounded by what was exported in 2019-2020.

  • Activity history is not included in the Propeller export

    Propeller tracked email opens, clicks, replies, and meeting events as live activity logs inside the Gmail extension, but these were not exposed in the standard data export. We can migrate Contacts, Deals, Companies, Pipeline Stages, and Email Campaigns, but the per-contact engagement timeline that Propeller captured is permanently lost. We flag this gap clearly during scoping and do not represent it as a migratable object. Mailchimp campaign tracking begins fresh after cutover.

  • Mailchimp is an ESP, not a CRM — deal context is lost structurally

    Mailchimp has no deal, opportunity, or pipeline object. Propeller Deals and Pipeline Stages encode into subscriber tags and text notes, but these are annotations, not live records. A sales team that relied on Propeller's pipeline view to track deal amounts, stage progression, and close probability will find no equivalent structure in Mailchimp. We document this gap in the mapping notes and recommend the customer evaluate a CRM integration (e.g., Mailchimp's native Salesforce or HubSpot connectors) if ongoing pipeline management is required alongside email marketing.

  • Owner/user assignments require manual remapping

    Propeller user accounts were tied to individual email addresses and assigned to contacts and deals. If a team member has since left the company and their Propeller account is inactive, their assignments cannot log in to re-establish. We map all known owner emails and encode them as subscriber tags, but Mailchimp has no user-assignment model for subscribers. Customers whose sales process depends on knowing which rep owns a contact should plan to rebuild owner assignment in a new CRM, not in Mailchimp.

Migration approach

Six steps for a successful Propeller CRM to Mailchimp data migration

  1. Archive intake and data audit

    We receive the customer's Propeller CRM shutdown archive (typically a CSV export or zipped file set). We audit the archive for record types present, field completeness, row counts per object (Contacts, Companies, Deals, Campaigns, Templates), and the presence of merge fields or custom properties. We flag any objects that are absent from the archive (e.g., if the contact list is missing or the campaign records are empty) and communicate data gaps to the customer before migration begins. If the customer does not have an export file, we confirm whether one was requested from Propeller support before the February 2020 deadline.

  2. Deduplication and data cleaning

    We deduplicate the Propeller contact list by email address, keeping the most recent record per address. We validate email addresses for format correctness and flag hard bounces and unsubscribed statuses from the Propeller export for Mailchimp's Suppression List import. We resolve duplicate company name variations (e.g., 'Acme Corp', 'ACME', 'Acme Corporation') by normalizing to a single canonical company name before encoding as merge fields and tags. We remove records that are explicitly marked as deleted or bounced in the Propeller archive.

  3. Object mapping and deal context encoding

    We apply the Propeller-to-Mailchimp object mapping: Contacts to Subscribers, Companies to merge fields and tags, Deals to text-encoded tags and notes. We encode pipeline stage values as subscriber tags, owner email assignments as tags, and campaign associations as audience segments or reference notes. We run a test import of 50-100 records into a Mailchimp test audience using the Mailchimp API to validate field mapping, merge field compatibility, and tag format before committing to a full load.

  4. Template extraction and Mailchimp template creation

    We extract all Propeller email templates from the archive, including HTML body, subject line, and merge field names. We translate Propeller merge field placeholders to Mailchimp merge tag syntax (e.g., *|FNAME|* becomes {{FNAME}} in Mailchimp's template variable format). We create Mailchimp Templates via the Mailchimp API using the extracted HTML and confirm the template renders correctly in Mailchimp's editor. The customer reviews and approves all templates before they are set as active.

  5. Full audience import and suppression list upload

    We run the full contact import into the production Mailchimp audience via the Mailchimp API with batch chunking (up to 500 subscribers per batch per Mailchimp's current API limits) and exponential backoff on rate limit responses. We upload the suppression list (hard bounces, unsubscribes) from the Propeller archive to ensure these contacts do not receive re-import as active subscribers. We generate a row-count reconciliation report comparing Propeller contact totals against Mailchimp subscriber totals and flag any records that failed to import.

  6. Cutover, campaign inventory delivery, and template handoff

    We deliver the written campaign inventory documenting all Propeller Email Campaigns (names, send dates, associated contact lists, and open/click metrics from the archive) as a reference document. We deliver the template handoff with all Propeller templates recreated in Mailchimp. We provide a brief written inventory of Propeller workflow and automation patterns for the customer to rebuild in Mailchimp Customer Journeys. We do not rebuild automations as code; that work is an admin task or a separate engagement. We support a five-business-day post-migration window for reconciliation issues raised from the imported audience.

Platform deep dives

Context on both ends of the pair

Propeller CRM logo

Propeller CRM

Source

Strengths

  • Gmail-deep integration via Chrome extension eliminated context switching between inbox and CRM.
  • Single-tier pricing included all features — no upgrade gating for automation or reporting.
  • Lightweight setup meant small teams were operational within hours, not weeks.
  • Email tracking and automated follow-up sequences ran from inside the inbox without separate tools.
  • Pipeline visualization gave small sales teams a clear view of deal progress without enterprise complexity.

Weaknesses

  • Reporting was consistently described as limited — basic dashboard views with no advanced filtering or exportable analytics.
  • The platform shut down permanently in December 2019, leaving no active product, support, or API.
  • No mobile app beyond responsive web — field sales teams without laptop access had no native mobile experience.
  • Custom objects and advanced field types were not supported, making it unsuitable for complex data models.
Mailchimp logo

Mailchimp

Destination

Strengths

  • Free plan up to 500 contacts makes it the lowest-friction entry point for new email marketers.
  • Drag-and-drop builder and template library produce polished emails without design or coding skills.
  • Strong deliverability reputation backed by years of email infrastructure expertise.
  • 300+ native integrations cover the most common marketing stack combinations out of the box.
  • Consolidated platform for email, automation, landing pages, and ads reduces the number of tools small teams must manage.

Weaknesses

  • Contact-based pricing model charges for unsubscribed and non-subscribed records, inflating costs relative to competitors.
  • Five-step automation limit on Standard tier forces upgrades for basic customer journeys, a frequently cited frustration.
  • Template HTML is Mailchimp-specific and does not export cleanly for use in other email platforms.
  • Post-Intuit roadmap uncertainty means customers cannot confidently plan long-term platform investments.
  • Account suspension risk without clear pre-warning disrupts campaign scheduling for affected businesses.

Complexity grading

How hard is this migration?

Moderate CRM migration. 1 of 8 objects need a manual workaround.

C

Overall complexity

Moderate migration

Derived from compatibility, mapping clarity, API constraints, and data volume across Propeller CRM and Mailchimp.

  • Object compatibility

    C

    1 of 8 objects need a manual workaround.

  • Field mapping clarity

    C

    Field mapping is derived from defaults — final spec confirmed during the sample migration.

  • Timeline complexity

    B

    8-object category — typical timelines run 2–7 days end-to-end.

  • API constraints

    B

    Propeller CRM: Not applicable — platform shut down December 15, 2019.

  • Data volume sensitivity

    B

    Propeller CRM doesn't expose a bulk API — REST + parallelization used for high-volume runs.

Estimator

Estimate your Propeller CRM to Mailchimp migration cost

Rule-based pricing — no per-record fees, no manual quotes. Migrations over 2M records are scoped individually.

Step 1

What are you migrating?

Pick a category, then your source and destination platforms.

Category

FAQ

Frequently asked questions about Propeller CRM to Mailchimp data migrations

Answers to the questions buyers ask most during Propeller CRM to Mailchimp migration scoping. Not seeing yours? Book a call.

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Most Propeller-to-Mailchimp migrations land between two and three weeks for archives with clean contact exports under 10,000 records and no complex deal context to encode. Archives with large contact volumes (20,000+), multiple company name variations requiring deduplication, or extensive Propeller campaign history to document as reference notes move to four to six weeks. The primary variable is data quality in the Propeller archive — older exports with missing fields or incomplete campaign records require more manual reconciliation.

Adjacent paths

Related migrations to explore

Ready when you are

Move from Propeller CRM.
Land in Mailchimp, intact.

Tell us record counts and timeline. We'll come back with a written quote inside 1 business day — no commitment, no sales pitch.

Accuracy guarantee Rollback included Quote in 1 business day