If you are an Air Miles collector, you can currently receive a nice little bonus for signing up to receive emails from Staples Canada. Click the link below, where you can register to receive emails, and also get a bonus of 50 Air Miles reward miles.
This offer is valid until the 5th of October, so you do have some time to sign up. You will need to enter your email and Air Miles collector number, but be sure double check that you enter the correct number in order to be credited. The offer is valid once per collector account, but of course if you have multiple collector accounts in your household you can all sign up and receive the miles.
It does not make mention of how long it will take for the 50 bonus Air Miles to appear in your account, but these types of promotions often take several weeks to credit.