I have built an example of how you can use Salesforce Ideas and create new ideas from emails. Using Force.com Email Services to allow people to send emails and convert the emails into new Ideas.

Taking the subject line as the title of the Idea and use the body of the email as the content for the Idea.

The main class for creating the Email Services is below.

Get the latest Salesforce Developer blog posts and podcast episodes via Slack or RSS.

Add to Slack Subscribe to RSS