Where do I find the IRS extension transmission notification?

The approval of your IRS tax extension can be substantiated by the IRS Submission ID, IRS Electronic Postmark and IRS Acceptance Status.  To locate the notification, log back into your account using your email and password used to create the account.  Click on, "Tax Filings" in the top right corner of the screen.  Click on the "Personal" or "Business" Extension Tab and "View Details" to the right.  You will find the IRS Submission details under the "Current Status" tab (see below).