When you send your first email from within the program, Manager automatically activates the Emails tab in the left navigation pane:
In that tab, you will see a listing of all emails sent from Manager and still stored within your accounting data file. Click View next to any email to display it. You will see the text of the email and a PDF image or icon (depending on your email program and preferences) of the form or report that was emailed.
To delete an email, click Delete in the lower right corner of its window: