Instructions on how to configure the Omnisend integration in order to pass collected email addresses to an email list
1. First thing you need to do is provide an Omnisend API key. You will need to save this value to the Account Settings.
2. Next, you will need to enable the integration on the individual captive portals. Go to Networks -> Captive Portals -> Your Captive Portal and change the "Add to Omnisend" value to Enabled