I have looked at other Visa Embassy websites. There is definitely different processes at different locations.
Amongst other information....
Mexico - website states that they will send out an acknowledgement letter 15 days after they receive the application from Mississauga
Tiempos Estimados de Proceso
Jamaica - website states to wait 8 weeks for the acknowledgement letter
Jamaica :: Home :: Discover Canada :: Visas and Immigration
Aside from the fact that other Embassies "allow" you to contact them regarding the application (as opposed to Haiti where their website flat out tells you not to contact them) most people wouldn't need to email Haiti if they sent out the ack. letter which contains the B file number. Then you could use E-CAS as they instruct you to do.