You have to include a valid hashcash stamp in the headers of your message; specifically, one that includes my recipient address within the stamp.

在您的消息头中，必须包括一个合法的hashcash戳记(hashcash stamp)；具体地说，该标志中包含我的收件人地址。

youdao

In addition to the ability to send various message formats on disparate channels, the vendor offers a hook to allow for recipient address validation via a provided interface.

除了通过不同渠道发送各种格式的消息的能力之外，供应商通过一个已给的接口，提供一个钩子(hook)来允许进行收件人地址验证。

youdao

Finally, note that the configuration file contains the address of only one recipient.

最后请注意，该配置文件只包含一个收件人的地址。

youdao

These banner ad companies typically "hide" the recipient's e-mail address in the Web address of the graphic, so that their servers can later match the cookie to the recipient's e-mail address, Smith said.

CNN: Privacy groups ask FTC to close e-mail loophole

They need the ability to encode the message header---the recipient's address---in a new and detectable way.

ENGADGET: New 'subconscious mode' could improve smartphone battery life, supress your WiFi id

Adapted to the realities of each country and the institutions that they choose to adopt to strengthen their national capacities in bioethics, the ABC project's intention is to allow recipient countries to address their needs.

UNESCO: MEDIA SERVICES