Automate Trello & Mailchimp

Stop paying for mismatched spreadsheets. Sync data between Trello and Mailchimp in real-time, so you can manage your operations without the busywork.

Get This Workflow Built

Custom API Integration

Secure Data Transfer

Done-For-You Setup

How the Data Flows

graph LR
    subgraph Source ["Trello"]
        T1(["Card Archived Legacy"])
    end
    
    subgraph Middleware ["Enterprise Integration Core"]
        W[CRON API
Poller] --> V{Validation
& Auth}
        V -->|Fail| DLQ[Dead Letter
Queue]
        V -->|Pass| Map[Data Mapping
& Transformation]
        Map --> Retry[Rate Limiting
& Retries]
    end
    
    subgraph Target ["Mailchimp"]
        A1(["Add Note to Subscriber"])
    end

    T1 -->|JSON Payload| W
    Retry -->|Authenticated API POST| A1

    style Source fill:transparent,stroke:#cbd5e1,stroke-dasharray: 5 5
    style Target fill:transparent,stroke:#cbd5e1,stroke-dasharray: 5 5
    style Middleware fill:#f8fafc,stroke:#94a3b8,stroke-width:2px
    style T1 fill:#3b82f6,stroke:#fff,stroke-width:2px,color:#fff
    style W fill:#1f2937,stroke:#fff,stroke-width:1px,color:#fff
    style V fill:#1f2937,stroke:#fff,stroke-width:1px,color:#fff
    style Map fill:#1f2937,stroke:#fff,stroke-width:1px,color:#fff
    style Retry fill:#1f2937,stroke:#fff,stroke-width:1px,color:#fff
    style DLQ fill:#ef4444,stroke:#fff,stroke-width:1px,color:#fff
    style A1 fill:#e11d48,stroke:#fff,stroke-width:2px,color:#fff

When Trello and Mailchimp operate independently, project updates in Trello do not automatically reflect in Mailchimp's audience lists. For instance, if a project manager updates a card with a new email address for a campaign, this change must be manually entered into Mailchimp. This leads to discrepancies in contact information, causing marketing teams to send campaigns to outdated or incorrect email addresses, ultimately wasting time and resources on ineffective outreach.

Top Ways to Automate Trello & Mailchimp

Automated Subscriber Updates: Seamlessly sync new Trello card assignees with Mailchimp subscriber lists, ensuring your marketing campaigns always target the right audience.
Task-Triggered Campaign Launches: Automatically initiate Mailchimp email campaigns based on specific Trello task completions, allowing you to engage your audience at the perfect moment.
Real-Time Performance Tracking: Integrate project timelines with Mailchimp analytics to receive instant updates on campaign performance, enabling data-driven decisions and timely adjustments.

How to Build the Trello → Mailchimp Sync

In Trello, create a webhook that listens for card updates. Use the endpoint https://api.trello.com/1/cards/{id}/actions/updateCard.
Configure the webhook to trigger on 'updateCard' actions, ensuring it captures the idList and desc fields from the payload.
Extract the relevant data from the webhook payload, specifically the email address from the card description where applicable.
Use the Mailchimp API to POST this data to the endpoint https://.api.mailchimp.com/3.0/lists/{list_id}/members.
Format the POST request payload to include the extracted email address and set the status to 'subscribed'.

Developer Warnings & API Gotchas

Ensure that the email address extracted from Trello's card description is validated before sending it to Mailchimp, as invalid email formats will cause the API call to fail.
Be cautious of the data types; Trello may send the card description as a string, but Mailchimp requires specific JSON formatting for the member object.
Check that the list ID in the Mailchimp endpoint corresponds to the correct audience list; using an incorrect list ID will result in failed API requests and data not being captured.

Supported API Operations

We leverage official, stable endpoints to ensure secure data transfer. No deprecated legacy routes.

When this happens in Trello... Card Archived (Legacy)

Do this in Mailchimp Add Note to Subscriber
When this happens in Trello... Card Due

Do this in Mailchimp Add Subscriber to Tag
When this happens in Trello... Card Moved to List

Do this in Mailchimp Add/Update Subscriber
When this happens in Trello... Card Moved to List (Legacy)

Do this in Mailchimp Add/Update Subscriber
When this happens in Trello... Card Updated

Do this in Mailchimp Archive Subscriber

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I can see you're looking at mapping Trello to Mailchimp. Tell me about your current setup—what's the specific bottleneck you're trying to automate right now?