Connectors / Integration
Connect Mailchimp and HubSpot to Unify Your Marketing and CRM Data
Sync email campaign performance, contacts, and engagement data between Mailchimp and HubSpot automatically, in real time.
Mailchimp + HubSpot integration
Mailchimp and HubSpot are two of the most widely used platforms in modern marketing stacks, but they do very different things. Mailchimp handles email campaign creation, audience segmentation, and deliverability. HubSpot runs your CRM, sales pipelines, and marketing automation. Without an integration, contact records, campaign engagement signals, and list membership fall out of sync fast — and someone ends up doing manual exports to fix it.
When Mailchimp and HubSpot run independently, revenue teams lose visibility into how email campaigns influence deal progression, and marketers are stuck manually moving contacts between systems. That creates errors, delays, and duplicate records. With tray.ai connecting the two, you can automatically push HubSpot contacts into targeted Mailchimp audiences, sync email open and click activity back into HubSpot as engagement properties, update contact lifecycle stages based on campaign behavior, and trigger sales follow-ups the moment a prospect engages with an important email. Marketing and sales end up working from the same data instead of arguing about whose copy is right.
Automate & integrate Mailchimp + HubSpot
Automating Mailchimp and HubSpot business processes or integrating data is made easy with Tray.ai.
Use case
Sync HubSpot Contacts to Mailchimp Audiences
Automatically push new or updated HubSpot contacts into the right Mailchimp audience segments based on lifecycle stage, persona, or custom properties. No more CSV exports, no more stale lists. Contacts disqualified or marked as unsubscribed in HubSpot are immediately reflected in Mailchimp to keep you compliant.
- Eliminate manual CSV imports and exports between platforms
- Keep Mailchimp audiences current with real-time CRM data from HubSpot
- Automatically respect unsubscribe and opt-out status across both systems
Use case
Push Mailchimp Campaign Engagement into HubSpot Contact Records
When a contact opens, clicks, or unsubscribes from a Mailchimp campaign, tray.ai writes that engagement data directly onto the matching HubSpot contact record as timeline events or custom properties. Sales reps can see which prospects are actively reading marketing emails without leaving HubSpot, so they know exactly who to call first.
- Give sales teams visibility into email engagement without leaving HubSpot
- Trigger HubSpot workflows based on Mailchimp open and click events
- Build accurate lead scoring models using real email engagement signals
Use case
Update HubSpot Lifecycle Stages Based on Email Behavior
Automatically advance a contact's HubSpot lifecycle stage — from subscriber to marketing qualified lead — when they hit specific Mailchimp engagement thresholds, like clicking a product link or opening three consecutive campaigns. Leads move through the funnel based on what they actually do, not on someone remembering to update a field. Sales teams get hot leads at the right moment.
- Automate lead progression without relying on manual stage updates
- Align marketing and sales handoffs with real engagement signals
- Reduce time-to-follow-up by triggering stage changes in real time
Use case
Create or Update Mailchimp Subscribers When HubSpot Deals Change Stage
When a HubSpot deal moves to a new pipeline stage — 'Proposal Sent' or 'Closed Won', for example — tray.ai can automatically add or update the associated contact in a specific Mailchimp audience or tag them for a targeted drip campaign. Prospects get email content that matches where they are in the sales conversation. Closed-won customers move straight into onboarding or retention sequences.
- Trigger contextually relevant email sequences at each deal stage
- Automatically enroll new customers into onboarding campaigns
- Align sales pipeline progression with email marketing touchpoints
Use case
Suppress HubSpot-Disqualified Contacts from Mailchimp Campaigns
When a contact is marked as a competitor, invalid email, or disqualified lead in HubSpot, tray.ai removes or suppresses them from active Mailchimp audiences and campaigns immediately. Your sender reputation stays intact, and you're not burning budget emailing people who will never buy.
- Protect email sender reputation by maintaining clean audience lists
- Prevent disqualified or invalid contacts from receiving campaigns
- Reduce bounce rates and spam complaints by syncing suppression lists
Use case
Aggregate Mailchimp Campaign Performance into HubSpot Reports
Pull campaign-level metrics from Mailchimp — open rates, click-through rates, unsubscribe counts — and store them as custom HubSpot properties or data objects so marketing managers can report on email performance alongside CRM data. No more manual data pulls. Leadership gets a complete picture of how email marketing connects to pipeline and revenue.
- Report on email performance and CRM outcomes in a single dashboard
- Eliminate manual data pulls from Mailchimp into spreadsheets or BI tools
- Connect campaign engagement metrics directly to HubSpot revenue data
Challenges Tray.ai solves
Common obstacles when integrating Mailchimp and HubSpot — and how Tray.ai handles them.
Challenge
Duplicate Contact Records Across Both Platforms
Because Mailchimp and HubSpot both manage contact data independently, bidirectional syncs can generate duplicate or conflicting records when the same person exists under slightly different email formats or names in each system.
How Tray.ai helps
tray.ai's integration logic includes configurable deduplication steps that match contacts by email address before creating new records, and supports upsert operations so existing records are updated rather than duplicated. You can define custom conflict resolution rules to decide which platform acts as the master data source.
Challenge
Maintaining Compliance with Unsubscribe and Opt-Out Status
When a contact unsubscribes in Mailchimp, that preference has to be honored in HubSpot immediately — and vice versa — to stay compliant with GDPR, CAN-SPAM, and other data privacy regulations. Manual processes make this nearly impossible to enforce consistently.
How Tray.ai helps
tray.ai listens to unsubscribe webhook events from both Mailchimp and HubSpot in real time and propagates the opt-out status update to the other platform within seconds, so compliance is maintained without manual intervention or delay.
Challenge
Field Mapping Mismatches Between Platforms
Mailchimp uses merge fields with custom tags while HubSpot uses named contact properties, and the two data structures don't map to each other natively. Misaligned field mappings result in lost data, empty records, or broken segmentation logic.
How Tray.ai helps
tray.ai's visual data mapper lets teams explicitly define how each Mailchimp merge field corresponds to a HubSpot contact property, with support for data type transformations, default values, and conditional field logic to handle edge cases without manual cleanup.
Templates
Pre-built workflows for Mailchimp and HubSpot you can deploy in minutes.
Sync New HubSpot Contacts to Mailchimp Audience in Real Time
HubSpot Whenever a new contact is created in HubSpot, this template automatically adds them to a designated Mailchimp audience with mapped field data including name, email, company, and lifecycle stage. Duplicate checking is included to prevent list contamination.
Write Mailchimp Email Opens and Clicks to HubSpot Contact Timeline
HubSpot This template listens for Mailchimp campaign engagement webhooks and creates corresponding timeline events on the matching HubSpot contact record, giving sales reps a real-time view of email activity without switching tools.
Advance HubSpot Lifecycle Stage on Mailchimp Click Engagement
HubSpot When a Mailchimp subscriber clicks a high-intent link — such as a pricing page or demo request CTA — this template automatically updates their HubSpot lifecycle stage to Marketing Qualified Lead and enrolls them in a HubSpot sales sequence.
Add HubSpot Deal Stage Changes to Mailchimp as Tags or Audience Updates
HubSpot As HubSpot deals move through pipeline stages, this template updates the associated contact's Mailchimp tags or audience membership to make sure they receive stage-appropriate email content — case studies during negotiation, onboarding guides after closing.
Remove Unsubscribed Mailchimp Contacts from HubSpot Marketing Emails
HubSpot This template handles GDPR and CAN-SPAM compliance by detecting Mailchimp unsubscribe events and immediately updating the HubSpot contact's email opt-out status, so they don't receive further marketing communications from either platform.
Daily Mailchimp Campaign Report Sync to HubSpot Custom Properties
HubSpot On a daily schedule, this template pulls the previous day's Mailchimp campaign performance metrics and writes open rate, click rate, and subscriber count to custom HubSpot properties linked to campaign-specific contact lists for unified reporting.
How Tray.ai makes this work
Mailchimp + HubSpot runs on the full Tray.ai platform
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Build AI agents that read, write, and take action in Mailchimp and HubSpot — with guardrails, audit, and human-in-the-loop.
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Expose Mailchimp + HubSpot actions as governed MCP tools — observable, rate-limited, authenticated.
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