From the official Canada Post update page:
Impact to Customers
Rotating legal strikes may be isolated to one or two specific locations at a time, affecting those areas for a period of 24 hours. In that situation, Canada Post would continue to accept, process and deliver mail and parcels in all other areas. Once the temporary disruption ends, we would return to normal operations in the affected locations.
In the event the strike does happen, Supherbs will be monitoring the progress of this strike and the locations it will affect at all times to find ways to combat the potential for error in receiving your orders in good time.
Our highest priority is our customers. We will do everything we can to make sure this effects you in the least possible way
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