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Other prohibited items and restrictions
There are also prohibitions and restrictions around other items not mentioned in previous sections of this article.
Envelopes and self-mailers
- Unsealed envelopes and unsealed self-mailers are unacceptable for mailing when deposited as Letter-post
- Envelopes (except Special Handling) with windows are unacceptable for mailing unless the:
- Window has a transparent cover parallel to the length of the envelope
- Address of the addressee is easily read
- Address doesn’t interfere with the date-stamping process
- When mailed at the Incentive Lettermail™ price, we only allow one auxiliary window on the front or the back of an envelope
- Items in wholly transparent envelopes are unacceptable for mailing unless:
- They can be easily handled by post
- The outside label is securely attached and is large enough for the name, address, postage, and any applicable service instructions
- With certain exceptions, items that have anything written, printed, or attached on their outside cover are unacceptable for mailing. Exceptions include:
- The name and address of the addressee or the sender
- Endorsements or attachments which we authorize or which are otherwise authorized by statute or regulation
- Items with covers that bear words, devices, and so on which may adversely affect the commercial or social standing of the addressee are unacceptable for mailing.
- Items with covers that bear rings or similar advertising devices appearing around the postage stamps are unacceptable for mailing. This includes hand-stamped or printed copies of postal cancelling or franking stamps.
- Items with covers that bear non-postal (private manufacture) stamps or stickers are unacceptable for mailing if they’re affixed in such a way that they may be mistaken for postage stamps or postal franking impressions, or otherwise indicate value.
- Mail is unacceptable for mailing if it bears successive addresses.
- Pre-printed labels and endorsements must:
- In no way imply, through pre-printed terminology or graphics on the mail piece, special handling or a service for which you haven’t paid postage
- Not duplicate trade-marks of, or used under licence by Canada Post
- Be directed to the addressee as an instruction related to the enclosure
- Be cleared with us before printing to ensure the “mailability” of an item
- Any item emitting an offensive odour is unacceptable for mailing
- Precious metals are unacceptable for mailing, unless mailed under a written Agreement between the Mailer and Canada Post.
These metals include:
- Gold bullion
- Gold dust
- Non-manufactured precious metals
- Any other item is unacceptable for mailing if it contravenes:
- The Universal Postal Convention
- Any applicable law
- Any other Canada Post requirements
Visit the Universal Postal Union Prohibitions Repository for information on dangerous products as defined by the International Air-Transport Association and as accepted by the Universal Postal Union.