To automatically send your new emails to GetResponse follow these steps:

Step 1: Log in to your GetResponse account.

Step 2: In the upper right corner of your screen, click "Integrations & API"

Step 3: in the left menu, select "API"

Step 4: Click "copy" next to 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 your sign-up form.

Step 8: In the left menu, click "Sync"

Step 9: Click the GetResponse icon

Step 10: In the window that pops up, paste your API key and click "Submit"
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Step 11: Back in the "SYNC" section, pick the list you want to send your new contacts to and click "Save"

You're done! :)
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Note: if you want to set Day of Cycle for new subscribers, you should add a hidden field and merge it with "Day of Cycle":