Step 1: Log in to your Iterable account.
Step 2: From the main menu choose Integrations and then API keys.
Step 3: click on NEW API KEY, and in the modal window enter its name, choose type Server-side and click on Create.
Step 4: Copy your API key.
Step 5: Log in to your Wisepops account.
Step 6: Open or create a popup with a sign-up form.
Step 7: Click on your Sign-up form.
Step 8: In the left menu, click on Sync, then Iterable.
Step 9: In the popup window, enter your API key which you copied in the step 4.
Set the API Endpoint to match the region of your Iterable account (US or EU).
Step 10: Select a list where the leads should be synced. If you want to create a new list, click Import list, then enable "Blank list" to create a list with no users.
And voila!