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Admin access or API permissions in your Lemlist account are required to generate an API key.

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Generate an API key

An API key authenticates requests to Lemlist on your behalf.

1

Open Integrations settings

Sign in to your Lemlist account.

  • Click your profile icon in the bottom-left corner.
  • Select Settings.
  • Click Integrations in the left sidebar.
2

Create the API key

Navigate to the API & Webhooks tab and locate the API overview section.

  • Click Generate key.
  • Enter a descriptive name for your key (e.g., StackOne Integration).
  • Click Create Key.
3

Copy the API key

Copy your API key and store it securely for use later.

  • ⚠️ You can only view this key once — it will not be shown again after closing this dialog.
  • If you lose it, delete the key and generate a new one.

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Linking the Account from the Hub

1

Navigate to the Hub

Use one of the three Linking Account Methods to access the Hub.
2

Fill out the fields

Fill out the following fields using details from your provider:
  • API Key
3

Connect

  • Click Connect
  • If applicable, the provider will redirect you to a sign-in or authorization page. Complete the provider’s authorization flow.
  • Once authorization is successful, you will see a confirmation popup

If the account linking is successful, you will see the newly linked account in your Accounts page.