In the left hand navigation, click "Settings" and then click "API Keys"
In the upper right hand corner, Click the blue "Create new API Key" button
Name your API Key "Textiful"
Copy the key to your clipboard by clicking on the copy icon
Paste your key in the input field within Textiful.
Step 2: Enable the Simplero Sync
Once Textiful is authorized, you'll need to enable and customize how email addresses are synced to Simplero.
On the keyword details page in Step 3, check the "Sync collected email addresses to my email list" box. Below that check the "Sync Emails to Simplero" box.
If you do not see the Simplero checkbox, click the "Add more email integration options" link to go to the Integrations page and follow the instructions in Step 1 above.
Step 3: Customize the Simplero Sync
Click the "Simplero" tab in the left hand navigation to view all of the Simplero Sync options.
Select a Simplero List
From the dropdown, select the Simplero list that you would like all collected email addresses to be added to.
Choose Data to Sync
By default, Textiful will sync just the email address to Simplero. You can chose to have additional data to sync to the Simplero list by clicking the "Add Data Field To Sync" link. Select a Textiful data field that you want to sync to the selected Simplero merge tag.