Lettermail along with other Canada Post services have been re-enabled, although there may be delays, as the CUPW has instituted an Overtime Ban. Additionally there may be further job action, and if you select a Canada Post service we may have to use a alternate carrier.
Note: Sprays and other Aerosols are "Non-Mailable Material" and also considered "Hazardous Goods" by both UPS and FedEx, and are only available for Pickup, or local delivery by Good Foot Delivery.