The To: email address is required. All other properties are optional.
The tenant admin can configure the From: email address on the tenant admin's Edit Tenant page. Or,
The designer can enter a different address in the From: field on the Document Action tab. The This From address replaces the default no-reply@…, an the address configured on the Edit Tenant screen or any settings in web.xml or frevvo.xml config files -config.properites file for In-house customers.
You can even use the standard internet address convention, for example: From: frevvo Client Services <email@example.com>, so that your emails appear in people's inboxes looking like this: