Before you can connect your CMS to your MailUp account by filling out the fields on the setup page, you will need to activate the MailUp API in your MailUp account:
Frontend
IP registration for "Frontend" service is required for MailUp integrations with Wordpress, Drupal, Joomla and Blogger
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- Log into your MailUp account
- Navigate to Settings > Account settings > Developer's corner > Web services
- If you access to this page for the first time you should also set your password in "WS Password WS" data field
- Select MailUpImport from the drop-down
- Check the Enabled checkbox
- For added security, enable IP Address Validation and add the IP address of your Web site (even more than one address)
- Press "Save"
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