It extends the form extension with the following features:
- country select box by using static_info_tables
- CopyToSenderEmailFinisher:
- Multiple file upload support

- Privacy policy checkbox: Set ID of policy page
- New property fields:
- info
- Choose template for email
- Choose language for email
- Sender registration in site sets: Editors can choose valid senders in the plugin settings
- New view helpers:
- RenderProcessedFormValueViewHelper: Render value of a single form field
With the sender-in-site feature, administrators can define valid senders in the site configuration and editors can select them in the plugins.
First step: Activate the feature in the side wide options.
Second step: Configure new valid addresses
It is no longer possible to set the sender manually.
Third step: Choose sender address in plugin



