Connectors / Integration
Connect Campaign Monitor and HubSpot to Unify Your Marketing Engine
Sync contacts, campaigns, and engagement data between Campaign Monitor and HubSpot so your marketing actually works as one system.
Campaign Monitor + HubSpot integration
Campaign Monitor and HubSpot do different jobs well. Campaign Monitor is built for beautifully designed email, while HubSpot handles full-funnel CRM and marketing automation. The problem is when they run as separate systems — teams end up manually exporting lists, reconciling contact records, and guessing which emails actually influenced a deal. Integrating Campaign Monitor with HubSpot through tray.ai cuts out that busywork, keeping contact data, campaign activity, and engagement signals moving automatically between both platforms.
Marketing and sales teams need timely, accurate data to make decisions that move pipeline. When Campaign Monitor and HubSpot aren't connected, campaign engagement stays locked inside Campaign Monitor while contact lifecycle stages and deal information sit isolated in HubSpot. That gap creates duplicated contacts, stale segmentation lists, missed follow-up opportunities, and broken reporting. With the two platforms integrated on tray.ai, every email open, click, bounce, or unsubscribe in Campaign Monitor shows up instantly on the corresponding HubSpot contact record. New leads and lifecycle changes in HubSpot automatically update your Campaign Monitor subscriber lists. The result is a marketing and sales operation where campaign performance directly informs CRM activity, and the other way around.
Automate & integrate Campaign Monitor + HubSpot
Automating Campaign Monitor and HubSpot business processes or integrating data is made easy with Tray.ai.
Use case
Sync New HubSpot Contacts to Campaign Monitor Lists
When a new contact is created or updated in HubSpot — through a form submission, import, or sales rep entry — tray.ai automatically adds or updates that subscriber in the right Campaign Monitor list based on lifecycle stage, persona, or any custom property. Your email audiences stay current without manual CSV exports or list management. Marketing teams can launch campaigns knowing they're reaching the right people.
- Eliminate manual list exports and imports between HubSpot and Campaign Monitor
- Get new leads into nurture campaigns within minutes of entering HubSpot
- Keep segmentation accurate by mapping HubSpot properties to Campaign Monitor custom fields
Use case
Write Campaign Monitor Engagement Data Back to HubSpot
Email opens, clicks, bounces, and unsubscribes from Campaign Monitor are automatically written back to the corresponding contact record in HubSpot as contact properties, timeline events, or activity notes. Sales reps can see which emails a prospect has engaged with without leaving HubSpot, so they can personalize outreach and prioritize follow-up. Marketing leaders get a complete engagement picture inside their CRM.
- Give sales reps real-time email engagement context directly inside HubSpot
- Trigger HubSpot workflows based on Campaign Monitor email activity
- Build a unified engagement history across both platforms for accurate reporting
Use case
Automatically Unsubscribe Contacts Across Both Platforms
When a subscriber unsubscribes or marks an email as spam in Campaign Monitor, tray.ai immediately updates their opt-out status in HubSpot to stop future marketing communications, and vice versa. This two-way suppression sync protects your sender reputation, keeps you compliant with GDPR and CAN-SPAM, and prevents your sales team from accidentally re-engaging opted-out contacts. Managing unsubscribes manually across two platforms is error-prone. Automation removes that risk.
- Stay compliant with GDPR, CAN-SPAM, and other email regulations automatically
- Protect sender reputation by stopping emails to opted-out contacts
- Eliminate the risk of missing unsubscribes that only exist in one platform
Use case
Trigger Campaign Monitor Campaigns from HubSpot Lifecycle Stage Changes
When a HubSpot contact moves from lead to Marketing Qualified Lead, or from MQL to SQL, tray.ai can automatically add them to a specific Campaign Monitor list or trigger a campaign built for that stage of the buyer journey. This closes the gap between CRM intelligence and email execution, so milestone moments in the funnel get the right content at the right time. No more manually hunting for contacts who just crossed a lifecycle threshold.
- Deliver stage-specific email campaigns triggered by real CRM lifecycle changes
- Reduce reliance on manual campaign scheduling and list building
- Tie marketing campaign activity directly to sales pipeline milestones
Use case
Enrich HubSpot Contacts with Campaign Monitor Subscriber Data
Pull Campaign Monitor subscriber fields, list memberships, and campaign history into HubSpot to build richer contact profiles that inform lead scoring, segmentation, and sales conversations. When both platforms share data in both directions, your HubSpot lead scoring model can factor in email engagement as a signal, and your Campaign Monitor segments can draw on HubSpot deal stage, industry, or company size. Two partial pictures become one complete view of every contact.
- Incorporate email engagement signals into HubSpot lead scoring models
- Build more precise Campaign Monitor segments using HubSpot CRM attributes
- Give sales reps a complete contact history that includes email campaign activity
Use case
Sync Campaign Monitor Bounces to HubSpot for Data Hygiene
Hard and soft bounces recorded in Campaign Monitor are automatically synced to HubSpot, flagging contacts with invalid or unreachable email addresses so your teams can take action. This prevents wasted effort sending to bad addresses and keeps your HubSpot database clean. tray.ai can also trigger internal notifications or HubSpot tasks when high-value contacts bounce, prompting reps to track down updated contact information.
- Keep HubSpot contact records accurate by flagging bounced email addresses automatically
- Stop wasting campaign spend on invalid or unreachable contacts
- Alert sales reps when key accounts have bounced email addresses so they can follow up
Challenges Tray.ai solves
Common obstacles when integrating Campaign Monitor and HubSpot — and how Tray.ai handles them.
Challenge
Matching Contacts Across Two Different Data Models
Campaign Monitor and HubSpot use different identifiers, field structures, and data conventions, making it hard to reliably match and sync the same person across both platforms without creating duplicates or missing records — especially when email addresses are inconsistently formatted or a contact exists in one system but not the other.
How Tray.ai helps
tray.ai's data transformation and field mapping tools normalize contact data before syncing. Built-in logic can match on email address, apply deduplication rules, and conditionally create or update records depending on whether a match is found, keeping the sync clean and reliable.
Challenge
Handling High-Volume Webhook Events from Campaign Monitor
Active email programs can generate thousands of engagement events — opens, clicks, bounces — in a short window after a large campaign send. Without proper event queuing and rate-limit handling, an integration can overwhelm the HubSpot API or drop events during traffic spikes.
How Tray.ai helps
tray.ai's workflow engine is built for high-volume event streams, with built-in queuing, retry logic, and rate-limit awareness. The platform automatically throttles API calls to HubSpot within its permitted limits and retries failed requests, so no engagement events are lost even during peak send windows.
Challenge
Maintaining Two-Way Sync Without Infinite Loops
When data flows in both directions between Campaign Monitor and HubSpot, a change in one platform can trigger a write to the other, which then triggers another write back. That loop corrupts data and burns through API quota fast. It's one of the most common pitfalls in building bidirectional integrations.
How Tray.ai helps
tray.ai workflows support conditional logic and state management to detect and prevent circular sync loops. By checking whether a change originated from the integration itself before triggering downstream updates, and using timestamp-based or flag-based guards, tray.ai keeps data flowing in the right direction.
Templates
Pre-built workflows for Campaign Monitor and HubSpot you can deploy in minutes.
New HubSpot Contact to Campaign Monitor Subscriber
HubSpot 
Campaign Monitor Automatically adds a new HubSpot contact to the appropriate Campaign Monitor subscriber list when they're created or when a specified property is set, mapping HubSpot fields to Campaign Monitor custom fields to keep data consistent.
Campaign Monitor Email Engagement Sync to HubSpot Timeline
Campaign Monitor HubSpot Listens for email open, click, bounce, and unsubscribe events in Campaign Monitor and writes each event as a timeline activity or contact property update on the matching HubSpot contact record, giving sales and marketing full visibility into email engagement without leaving HubSpot.
Bidirectional Unsubscribe Sync Between Campaign Monitor and HubSpot
Campaign Monitor HubSpot Maintains a real-time, two-way sync of opt-out status between Campaign Monitor and HubSpot, so unsubscribes and marketing opt-outs recorded in either platform are immediately reflected in the other to protect compliance and sender reputation.
HubSpot Lifecycle Stage Change to Campaign Monitor List Enrollment
HubSpot Campaign Monitor Watches for lifecycle stage transitions in HubSpot and automatically moves contacts between Campaign Monitor lists or triggers a targeted campaign sequence based on the new stage, so every buyer milestone gets the right email content.
Campaign Monitor Hard Bounce to HubSpot Contact Flag
Campaign Monitor HubSpot Detects hard bounces in Campaign Monitor and automatically updates the corresponding HubSpot contact record to flag the email address as invalid, optionally creating a HubSpot task for a sales rep to source an updated email address.
Campaign Monitor Campaign Performance Report to HubSpot Custom Object
Campaign Monitor HubSpot After each Campaign Monitor campaign send, tray.ai retrieves aggregate performance metrics and stores them in a HubSpot custom object or logs them as campaign-level data, so marketers can analyze email performance alongside CRM and pipeline data inside HubSpot.
How Tray.ai makes this work
Campaign Monitor + HubSpot runs on the full Tray.ai platform
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Learn more →Agent Builder
Build AI agents that read, write, and take action in Campaign Monitor and HubSpot — with guardrails, audit, and human-in-the-loop.
Learn more →Agent Gateway for MCP
Expose Campaign Monitor + HubSpot actions as governed MCP tools — observable, rate-limited, authenticated.
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