Extension Kit for Your Favorite Apps

ExtendKit builds custom integrations that connect your essential business tools, eliminating data silos and reducing manual work so your team can focus on what matters most.

Integrations

Missive & Stripe

Automatically surface complete customer billing history and subscription details from Stripe directly in your Missive conversations.

No more switching between apps, no more manual lookups—just instant customer context that transforms support interactions.

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How to use
  1. Open Missive conversation with customer.
  2. Click on "Stripe" button in sidebar.
  3. View complete payment history and subscription information.
  4. The extension supports searching by email address and domain for each recipient.
How to install
  1. Add custom integration in Missive
    1. Open Settings in Missive
    2. Click on "Integrations"
    3. Click on "Add integration"
    4. Click on "Custom" integration
    5. Click on "Add to Missive"
    6. Enter "Name" (use "Stripe")
    7. Enter "iFrame URL" of integration:
    8. Click on "Add" button
  2. When you open the integration for first time, you will see a form where you have to choose:
    1. Backend URL, Header name and Header secret for your custom backend (see Github)
    2. Or use our hosted backend (create account on ExtendKit Dashboard)
  3. In every case you will need to create API key in Stripe Dashboard:
    1. Navigate to the API Keys section in your Stripe Dashboard.
    2. Click + Create restricted key. (Learn more about restricted keys)
    3. Select A third-party application.
    4. Give the key a descriptive name (for example, "Missive Integration").
    5. Grant Only Read access to the following permissions. Set all others to None:
      • Customers: Found under Core Permissions. This allows fetching customer details.
      • Invoices: Found under Billing Permissions. This allows reading payment history.
      • Products: Found under Billing Permissions. This allows fetching details about products associated with subscriptions.
      • Subscriptions: Found under Billing Permissions. This allows viewing subscription statuses.
    6. Click Create key at the bottom of the page.
    7. Your restricted key will be revealed. Copy this key and use it as part of your backend configuration or use it in ExtendKit Dashboard (if you use hosted backend).
Pricing

It is open-source and free to us. If you like it, you can buy us a coffee.

If you want to skip host and setup backend, you can use our hosted service for a small fee (4 USD / month).

FAQs

Pricing

Our connections and integrations are usually free and open-source. If you are not familiar with coding, you can use our hosted backend for a small fee.

Why a fee? Every hosted service costs money. In principle, we believe that services can be dangerous because, if they do not generate income, they cannot dedicate resources to security and maintenance.

Why a small fee? We just want to cover the costs of the service. If you need more advanced features, Conceptovo.com can help you with your requirements.

Do you provide support?

We are happy to help you with any questions. Use github issues or contact us or use our twitter account @conceptovo.

If you are using our hosted service, you can contact us at [email protected].