Login to your InboxGeek account.
Click on Open Events → Integrations.
Click the Add New button for a new integration.
InboxGeek will store all previous platform account identification for quick integration creation. If the account for your new integration is not already stored, click Create new Platform.
From the drop-down menu, select ExpertSender.
To retrieve the API Key and APIv2 address, login to your ExpertSender account.
Click Settings → Business Unit → Click API → Copy Your API Key → Copy Your APIv2 address
In InboxGeek, enter the copied APIv2 address into the APIv2 address field and the copied API Key into the API key/Token field .
Click Next. InboxGeek will fire a ping to the API key and the APIv2 address to confirm all is accurately entered.
If there are no issues then it will move you to the next tab, List.