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Customizing Subject Line in Return Email

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I am currently linking a marketing email to an email hyperlink (mailto:), but would like to customize the Subject Line for the email that opens when clicked. Is this possible? 

Thanks!

  • Suggested answer
    Haig Liu Profile Picture
    Haig Liu Microsoft Employee on at
    RE: Customizing Subject Line in Return Email

    Hi dplazo,

    Please refer to the link below: 

    https://www.computerhope.com/issues/ch000056.htm

  • jwcpc Profile Picture
    jwcpc 176 on at
    RE: Customizing Subject Line in Return Email

    yes, simply add a subject parameter in query string e.g. mailto:test@example.com?subject=An%20example%20subject%20line

    You need to HTML encode the subject line value, but there a tons of mailto link generators out there you can use to create these

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