Yes this SMS acknowledgement is only possible before sending your package. You should have asked for Tracking# while sending package via Canada Post. All such things assure you a peace of mind and a good night sleep. Ideally the package should have reached there but you want confirmation.Great! thanks for sharing your experience...
Is this just possible before sending your package?
I have posted my application through Canada Post. Unfortunately I didn't even ask for a track# and recipient signature to check if the package is received. This makes me worried. do you know from your experience if that might be an issue? the package was posted July 11.
Anyhow don't worry its not end of world, now you have the following options :
1. Call CIC call Centre and enquire about your package if it has reached their mail room. They may ask you about your ( Sponsor's ) UCI ID that you mentioned in the Sponsorship form and other relevant information.
or
2. Try linking your application ( if it has been entered into the system which takes some time, you will be able to find the application and after linking check its status ) using the link http://www.cic.gc.ca/english/e-services/account.asp
You need to create an account > Login > there is an option to Link an existing application to this account
More information at the following link for Link your paper application to your online account
http://www.cic.gc.ca/english/my_application/link.asp