You mentioned that you sent by email... Original PCC certificate needs to be sent. Please see below text from CIC website link : cic.gc.ca /english/ information/applications/guides/5609ETOC.asp
Hope that helps
How to obtain police certificates
Step 1. Apply for certificates
It is your responsibility to contact the relevant authorities.
Certificates are usually issued by the police of the country concerned, but in some countries you will have to apply to municipal, provincial, federal or other government authorities. The country's embassy or consulate in Canada may be able to give additional information.
When applying for police certificates, you should include for each person:
A completed Request for Police Certificates/Clearances and Authorization for Release of Information) (PDF, 59 KB) form (see Appendix A). Include photocopies for each applicant.
A set of fingerprints, if required by the authority of the country. Your local police or RCMP may be able to tell you where you can get fingerprints done. Take the Fingerprint Request Letter (PDF, 56 KB) and your photo identification (passport, travel document, etc.) with you when you go to get fingerprints taken. You may have to pay a fee.
Your complete mailing address (certificates will be sent directly to you).
Step 2. Submit the certificates
Include the police certificates with your application.
If the police authorities notify you that they will submit the certificates directly to us, include this notice with your application.
All police certificates must be originals; photocopies are not acceptable.
If your certificates are in a language other than English or French, attach an original translation prepared by an accredited translator.