What is pos nation? POS Nation delivers easy-to-use and affordable point of sale systems for small businesses. Discover how simple it is to improve checkout, and grow your business. POS Nation delivers easy-to-use and affordable point of sale systems for small businesses. Discover how simple it is to improve checkout, and grow your business.How do i get in touch with national post? nationalpost.com/manage. Customer Service: (416) 383-2500. Toll-free: 1-800-668-7678. Subscription Inquiries: [email protected]. ePaper Support: [email protected]. How do i contact the national post canada customer service? E-Paper; Refer a Friend; Contact National Post. Address: 300 – 365 Bloor Street E Toronto, Ontario, Canada M4W 3L4 . Customer Service: (416) 383-2500 . Toll-free: 1-800-668-7678 . Subscription ...How do i contact technical support at the post office? Technical Support. The Technical Support team can help when a website application or form doesn't work properly. If you have trouble using one of the following, please give us a call. Click-N-Ship ® File a Claim; PO Boxes; The Postal Store ® USPS accounts; 1-800-344-7779. Hours of Operation Monday – Friday 8 AM – 8:30 PM ET Saturday 8 AM – 6 PM ET