Once you are done with both Q-Pads and the strips are in the Storage Container you can drop the Return Mailer in any USPS outgoing mailbox. This could be at your home, at the post office, or in any blue USPS mailbox, whichever is most reliable and convenient for you. On weekends we recommend dropping them in a blue USPS mailbox.
The Return Mailer is prepaid so you don't need to worry about paying for postage.
Once you have shipped the sample you can indicate you have shipped it in the app.