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.
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.
Next Steps
Webhooks setup
Configure receiving Events for Lemlist into StackOne.