Good day,
Correspondence between Canadian Armed Forces Recruiting Centers and applicants will be made via Email or Phone call. Sometimes documents are mailed using regular post, however this is rare.
If you've submitted an application and it has been 10 business days with no contact since you've applied I would recommend that you submit an email request as to a status update of your application. Ensure that you include your application number if you know it. If you have not been provided your application number then include your full name as it appears on your application and your date of birth in the email. I have provided the link that will take you to the section of the Forces.ca website to submit an email request as to the status of your application.
http://www.forces.ca/en/page/contactus-73