You can save the email template by enabling the "Do you want to save this template?" checkbox in the PK4Connect Wizard screen.
To save an email template,
Go to the Campaigns tab, click the Campaign name that you wish to send an Email Blast. Add the recipients for this email blast and click the PK4Connect Email Campaign button. Select if you wish to send an email through Salesforce or from PK4Connect, add the recipients in the Setup Audience screen, and click the next button, the template is now saved, and can be used for the Email Blast.