Below are a list of shipping providers available in Northern Ontario. Click the link to use the location maps to determine what's available in your area.
Canada Post
https://www.canadapost.ca/cpc/en/business/small-business.page
Purolator
https://www.purolator.com/en/shipping/find-shipping-centre
UPS
https://www.ups.com/dropoff/?loc=en_CA
FedEx
https://www.fedex.com/en-ca/retail-locations.html
There are other smaller providers available as well - you can search online to find out which are available in your area.
Most ecommerce platforms have shipping plug-ins to allow you to automatically calculate shipping costs and print shipping labels yourself.