# Choose a NFT as a Stamp

By [PipeMail](https://paragraph.com/@pipemail) · 2022-05-31

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In PipeMail, everything about email is as close to reality as possible.

Just like sending mail in real life, in PipeMail, your mail must be stamped.

What is the Stamp? **The NFT!** Any NFT, both ERC721 and ERC1155, can be used as stamps.

### Attention:

1.  Although PipeMail supports ERC721 and ERC1155 NFTs as stamps, there are still limitations:
    

*   **ERC721**: PipeMail supports all ERC721 NFTs without any limitations.
    
*   **ERC1155**: Limitations vary by publisher.
    
    *   Published by PipeMail: No limitations.
        
    *   Published by others: Not support.
        

2\. About used stamps(NFTs).

After the mail is sent:

*   The ownership of the stamp is transferred to the recipient.
    
*   The stamp cannot be used again. (Any stamp can only be used once.)

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*Originally published on [PipeMail](https://paragraph.com/@pipemail/choose-a-nft-as-a-stamp)*