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About the Buyer-Seller Messaging Service

The Amazon Buyer-Seller Messaging Service makes communicating with third-party sellers easy and secure.

To access the Amazon Buyer-Seller Messaging Service, log into your Amazon.ca account and go to Buyer-Seller Messages.

Using the Buyer-Seller Messaging Service, you can:

  • View past communication with third-party sellers on Amazon.ca.
  • Respond to third-party sellers quickly and easily using the Reply option.
  • Send files to third-party sellers.
    • Supported file types: plain text (.txt), PDF, images (.jpg, .gif and .png), and Word documents (doc and .docx).
    • The entire message should not exceed 10 MB (including attachments).


  • Amazon.ca reserves the right to delete or remove any attachment containing what it considers to be inappropriate content.
  • You can use any information the third-party seller provides to contact the third-party seller, but we strongly recommend that you use the Buyer-Seller Messaging Service. By using the service, Amazon has a copy of all correspondence, in case of a dispute. This service also ensures that mail is filtered for spam and possible phishing attempts.

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