I see that my application for PR under family class(outland processing) has reached mississagua,ON. How long will it take for them to assign a file number? will they send the file number through e-mail or postal mail?
You are not likely to get a file number from Mississauga.
You have a receipt number that you may be able to access e-CAS.
When you get a sponsor approval that will have the sponsors client ID.
A file number will be later in the process.